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iframe type="text/html" width="640" height="360" src="https://www.youtube.com/embed/Xuj-r8MI3XE" frameborder="0">

Sorry for the poor quality of the video! I had not much time to make the video. I try to make a better video ASAP.

Features: 3.5" LCD replacement, VGA out, retro-style, scanlines on VGA, SMS games AND GG games in fullscreen on 3.5" LCD or VGA, scaled or native screen horizontal (selectable via jumper).
VGA and internal LCD is switchable via backlight knob. retro-style (vertical dark lines as the original old LCD) and scanlines on VGA are selectable by pressing START, FIRE1 and FIRE2 together.
You also have TV out at the VGA out connector: When internal 3.5" LCD is on, you also have RGB with CSync!

more infos here: order-lynx-lcd@online.de

The GG KIT contains: Board with 3.5" LCD, VGA connector with screws and quick guide (for 1ASIC, 2 ASIC and Majesco GG)

McWill ;-)

B1.jpg (248.26 KB)

B2.jpg (325.33 KB)

Hey, nice. What's the price? Shipping from Germany?

I would also like to know this!

Revo wrote

Hey, nice. What's the price? Shipping from Germany?

The GG mod cost 95 EUR plus shipping cost. Shipping cost within the EU 15 EUR and all other countries 35 EUR via DHL.

Looks awesome!
Mail sent

Here is another awesome video of my new Game Gear mod!

That screen looks awesome. Love the scanline option!

McWill, what about vertical scaling? will allow 1:1?

The scaling in that video is a bit nasty, as is the cropping... but then finding an LCD with integer scaling for all of 256x192, 256x224 and 160x144 would be ridiculously hard, especially at an exact aperture size.

What's the LCD persistence like? Some GG games need it, for example Power Drive (gameplay) and Batman Returns (title screen).

The VGA output is 31khz? or is possible to output 15khz?

Maxim wrote

The scaling in that video is a bit nasty, as is the cropping... but then finding an LCD with integer scaling for all of 256x192, 256x224 and 160x144 would be ridiculously hard, especially at an exact aperture size.

A 640x480 TFT will be a great idea no? integer scaling is possible for all systems, and non-integer scaling is much better than in 320x240, less evident

And are not difficult to find (i buy a 3.5" 640x480 LCD past year in ebay)

theelf wrote

McWill, what about vertical scaling? will allow 1:1?

No, because the aspect ratio isn't correct. So some circles become oval. And that makes no fun!

A 640 x 480 LCD was a idea, but is too expensive! The GG mod would be cost almost double the amount, because you also need additional hardware.

McWill wrote

theelf wrote

McWill, what about vertical scaling? will allow 1:1?

No, because the aspect ratio isn't correct. So some circles become oval. And that makes no fun!

A 640 x 480 LCD was a idea, but is too expensive! The GG mod would be cost almost double the amount, because you also need additional hardware.

The problem is that if the screen is 320x240, is impossible to make integer scaling for vertical

How do you deal with this? any kind of bilinear filter?

Can the scaling be turned on and off?

EDIT: Nevermind, I read in the description that it is possible.

I got my pre modded game gear from McWill yesterday.
He did an incredible job. I got a receipt with a company name, very professional. The work he put into it is simply amazing. You can't tell it's not original. Well, apart from the VGA connector sticking out from the bottom. The screen is incredible. GG games are scaled to fit the resolution, so there are some scaling artifacts if you pay really close attention, but there is no smoothing luckily. The scaling is done so that it results in full pixels. No filtering and no smoothing. As good as it gets.
Also tried VGA, works perfectly, scaled to 640X480. You might need to adjust the aspect a bit, but that goes for most VGA output consoles and devices. No biggie.

I trully have no downsides or cons to report and I am a critic. If you are still deciding, go for it. The question is how long stuff like this will remain available and untill what year are experts investing time into devices like these.

The scanlines are activated as followed. Keep holding down start+a+b and the GG switches between normal and scanlines every 3 seconds or something like that. VGA mode is activated by turning down the contrast to 0.

Again, McWill, thank your for such a stellar job. Your laber of love has not gone unnoticed.

Funny thing is that I've never actually played a regular GG, but judging from videos and pictures the original screen straight up stinks.
It is very comfortable to hold and play a GG, I was pleasantly surprised. It could just be the most playable handheld. Nice D-pad. And the speaker is really loud, amazing!

theelf wrote

McWill wrote

theelf wrote

McWill, what about vertical scaling? will allow 1:1?

No, because the aspect ratio isn't correct. So some circles become oval. And that makes no fun!

A 640 x 480 LCD was a idea, but is too expensive! The GG mod would be cost almost double the amount, because you also need additional hardware.

The problem is that if the screen is 320x240, is impossible to make integer scaling for vertical

How do you deal with this? any kind of bilinear filter?

Now the GG mod is available with new firmware:
Selectable native resolution or scaled resolution on 3.5" LCD and VGA in GG and SMS mod by pressing the 3 buttons!

Nice! I can't wait to get my GG back with your new firmware :)

McWill wrote

Now the GG mod is available with new firmware:
Selectable native resolution or scaled resolution on 3.5" LCD and VGA in GG and SMS mod by pressing the 3 buttons!

I received my modded GG from McWill with this latest firmware and I have to say I am delighted with it. Lovely clear and bright image. Master System resolution games look great scaled and don't lose much screen size at native resolution.
GG games are best left with the scaling on.
The VGA output even looks good on a 1080 LCD. The fake scan lines option is actually pretty effective. Still looking for a good CRT monitor to use with this and my DC.

It's great mods like this that help make the Sega 8 bit community the great place it is to be.

This is terrific stuff. I have one of the (now rare) Japanese GGLCD boards that started this mod off earlier in the year and am wondering what the added benefits to this board are. From what I understand there is:

1) added scanline feature
2) switchable resolution feature
3) backlight on/off switch

and perhaps more. What I'd really love to know is if this supports PAL. I documented the mod to make GG into PAL mode a while back here and it would be great to play some PAL 50hz stuff without the glitching (like New Zealand Story, for example).

Gotta save up my moneys for one of these after I finish my GGLCD mod!

-Segasonicfan

EDIT: just saw this thread for more info:
http://assemblergames.com/l/threads/sega-game-gear-lcd-mod.57895/

Is it true that he stole your design McWill? That's really not cool :/

Yeah electronic PCB made these days are really rare^^

Revo wrote

Yeah electronic PCB made these days are really rare^^

The GGLCD PCB by norix is, it is no longer in production AFAIK and it was very hard for me to obtain.

Buongiono
I sent for a review and installation of an LCD screen and VGA output on my game gear ,
excellent job , works perfectly ;
thanks, I'm very sadisfaction

Wow, I haven't frequented the forums for a long time and this comes out?

Very nice!

I have fitted quite a few of these, and they are perfect every time!

2013_0808_072622AA.JPG (1.62 MB)

2013_0808_072654AA.JPG (1.59 MB)

2013_0808_072721AA.JPG (1.73 MB)

hello
mail sent ^^
thanks for this awesome work!

I just wanted to say this mod is awesome. If anyone is on the fence about getting it like I was, go for it. Totally worth it. Completely satisfied.

IMG_20160505_185618.jpg (3.23 MB)

Can someone post a clear video of the screen scrolling (at different speeds and in different directions)? I'd suspect the integer scaling would bug me, so it'd help clear it up for others with the same issue.

Maxim wrote

Can someone post a clear video of the screen scrolling (at different speeds and in different directions)? I'd suspect the integer scaling would bug me, so it'd help clear it up for others with the same issue.

It bugged me, so I always turn off scaling. It is great for playing Master System games (e.g. using an EverDrive GG), though.

Thanks for posting these images and info. I've been super interested in getting one of these as an upgrade to the Norix board. Just need to save up money or wait for a price drop though.

Mostly intrigued by the "pure" original resolution mode with side-boarders. Not a fan of the pixel stretching that the Norix board does.

Also contrast / color balance seems to be an issue with these since the GG LCDs have quite a range from the model VA0 to the majesco. Royal Stone for example, looks great on my original GG - slightly muted pastel colors due to the blue and color dampening on the original model but it looks over saturated and nasty on an LCD or TV. Kind of interesting.

-Segasonicfan

One last thing. I just got a GG everdrive, which also plays Master System games (& SG-1000)
Master system games look glorious on the new screen.
I understood that Master system games look horrible on the regular screen.
So I just wanted to point out that this new screen ALSO makes for the perfect portable Master System.
Still massively enjoying the screen.

Having issues with the color coming up yellow or a redish color. I attached a photo. Can anyone help me out with this issue. I checked all my wires and everything is connected correctly. I am doing this for a Cx that went to another place to get installed but could not finish the work. Board revision is PCB Revision 837-7996 / 837-7719-01 VA0. Thank you

EDIT: The screen would flicker to the correct color then back to the yellowish/red color on every game

IMG_3171.JPG (2.41 MB)

It is best to contact McWill personally.

ok

belokk wrote

Having issues with the color coming up yellow or a redish color. I attached a photo. Can anyone help me out with this issue. I checked all my wires and everything is connected correctly. I am doing this for a Cx that went to another place to get installed but could not finish the work. Board revision is PCB Revision 837-7996 / 837-7719-01 VA0. Thank you

EDIT: The screen would flicker to the correct color then back to the yellowish/red color on every game

It seems the colors are mixed up. This can caused from a short circuit at the old LCD ribbon of pads D0 - D3 or wrong CLK_32MHz trace. Please check again, if there are any short circuits. Have you further pictures of your wiring, especially the old LCD ribbon.
BTW: I hope the GG was working correct before?

can you please post a picture of the CLK_32mhz solder point so that I have it correct.

I was not the original person who tried to install it, the Cx took it to another place to get it installed and thy could not finish the solder work. They brought it to me to finish the last 6 wires for the LCD pins. The other place also replaced a bunch of caps on the volume control board and on the main GG board. I am not sure if this is interfering with the color or if its a motherboard issue. The Cx does not know if the color issue was originally there or not. The other place that did tried to install it ripped pin 9 and loosen the old LCD pins. I had to solder directly to trace on a couple of them.

Here are the install pics.. also I was not the one who recapped the board.

IMG_3172.JPG (2.02 MB)

More pics

IMG_3173.JPG (2.19 MB)

More pics

IMG_3175.JPG (2.46 MB)

IMG_3174.JPG (1.81 MB)

IMG_3176.JPG (2.3 MB)

I think at pad 16 of the old LCD ribbon there could be a short circuit. Also at the IC2 near T2. Please also check C74 near the crystal X1.
BTW: I would remove all wires, clean the pads and solder again.
The wire CLK_32MHz seems to be OK. Attached you can see a picture of the CLK_32MHz point. You can use one of both points.
Please let us know the result after checking.

NinekoGG_VA0_2.jpg (867.75 KB)

ok, I will let you know

I tried everything you suggested, and its still giving me the color issue. The only way for me to really test it, is by moving the LCD to another GG and test it. Unfortunately I do not have access to one and the Cx does not have another I can move it too. I told the Cx if they by chance get another one (untouched) I can move it over. The Cx does not know if it had this issue or not before going to the other shop to get it installed. I don't have info where the Cx bought the LCD mod either.

Very nice!

So does this mean the pinout and data lines for the LCD have been fully reverse engineered and documented finally?

Man, those games look pretty wrong in that screen... I'm not sure if I'm watching the same video as all the people who are saying that it looks great.

If I understood correctly, you have to choose between pixel inconsistency or wrong aspect ratio?

I have a GG with MWill's lcd mod and it's really fantastic. You have to se it to believe it.

If I remember correctly these are the modes:
GG: scaled to fit, 1:1 (with black borders) and same with scanlines.
SMS: scaled to fit, 1:1 with only small borders and same with scanlies.

I think it is quite individual how you react to the scaled modes and depends on your relationship to the GG/SMS. I owned a GG earlier but couldn't really get used to the blurry screen, and I'm after all an original Lynx owner which has about as bleak original screen.

For me it was a real retro ressurection to get a modded GG (which now can act as a true sms handheld ) and to get my Lynx modded. I would give this mod 10 out of 10, it's fantastic. But I still enjoy my Lynx mod a tiny bit more 'cause it scales 1:1 perfectly so that one gets 11/10 ;)

I'm still more interested in the technical details.

Is it piggy backing off the RGB signal or is it properly decoding address lines?

I know replacement LCD was always a holy grail for my GG but I was never happy with effectively replacing the screen with a TV/monitor running from RGB, I want a real replacement that uses the same data lines.

It's attaching to the data lines and in posts at AtariAge he says it's all digital.

That's what I gathered, would be good to document the pinouts and signal format in wiki.

Yeah, but I get the impression he doesn't want to share too much, especially since it seems there was some weird ripping off of his device already.

Fair enough.

I guess I'll have a crack at decoding the lines myself. I would prefer a more open source solution so future tinkerers can implement their own modifications, especially as available hardware becomes obsolete.

I think the gist is to decode it to a frame buffer, then resample up on the way to the LCD (via whatever binary encoding it uses). A more powerful chip (FPGA?) could do fancy upscaling but any upscaling causes blurring or other ugliness. Given that we know there are four (?) data lines and a clock signal, which the TV mod converts to analogue, I guess the signal is not that complicated?

Author	Message
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	new mod 3.5" LCD replacement board Game Gear with VGA FULLSCREEN Posted: Fri Jul 10, 2015 10:33 am
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	iframe type="text/html" width="640" height="360" src="https://www.youtube.com/embed/Xuj-r8MI3XE" frameborder="0"> Sorry for the poor quality of the video! I had not much time to make the video. I try to make a better video ASAP. Features: 3.5" LCD replacement, VGA out, retro-style, scanlines on VGA, SMS games AND GG games in fullscreen on 3.5" LCD or VGA, scaled or native screen horizontal (selectable via jumper). VGA and internal LCD is switchable via backlight knob. retro-style (vertical dark lines as the original old LCD) and scanlines on VGA are selectable by pressing START, FIRE1 and FIRE2 together. You also have TV out at the VGA out connector: When internal 3.5" LCD is on, you also have RGB with CSync! more infos here: order-lynx-lcd@online.de The GG KIT contains: Board with 3.5" LCD, VGA connector with screws and quick guide (for 1ASIC, 2 ASIC and Majesco GG) McWill ;-) B1.jpg (248.26 KB) B2.jpg (325.33 KB)

Revo Guest	Posted: Fri Jul 10, 2015 10:43 am
Revo Guest	Hey, nice. What's the price? Shipping from Germany?

unfnknblvbl Joined: 12 Jul 1999 Posts: 891	Posted: Fri Jul 10, 2015 11:47 am
unfnknblvbl Joined: 12 Jul 1999 Posts: 891	I would also like to know this!

McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Posted: Fri Jul 10, 2015 11:57 am
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Revo wrote Hey, nice. What's the price? Shipping from Germany? The GG mod cost 95 EUR plus shipping cost. Shipping cost within the EU 15 EUR and all other countries 35 EUR via DHL.

D Joined: 01 Apr 2005 Posts: 250 Location: Almere, The Netherlands	Posted: Mon Jul 13, 2015 12:18 am
	Looks awesome! Mail sent

McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Posted: Thu Jul 23, 2015 1:50 pm
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Here is another awesome video of my new Game Gear mod!

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Thu Jul 23, 2015 2:25 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	That screen looks awesome. Love the scanline option!

theelf Joined: 26 Dec 2013 Posts: 34	Posted: Thu Jul 23, 2015 3:58 pm
theelf Joined: 26 Dec 2013 Posts: 34	McWill, what about vertical scaling? will allow 1:1?

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Thu Jul 23, 2015 5:16 pm
	The scaling in that video is a bit nasty, as is the cropping... but then finding an LCD with integer scaling for all of 256x192, 256x224 and 160x144 would be ridiculously hard, especially at an exact aperture size. What's the LCD persistence like? Some GG games need it, for example Power Drive (gameplay) and Batman Returns (title screen).

theelf Joined: 26 Dec 2013 Posts: 34	Posted: Thu Jul 23, 2015 8:37 pm
theelf Joined: 26 Dec 2013 Posts: 34	The VGA output is 31khz? or is possible to output 15khz? Maxim wrote The scaling in that video is a bit nasty, as is the cropping... but then finding an LCD with integer scaling for all of 256x192, 256x224 and 160x144 would be ridiculously hard, especially at an exact aperture size. A 640x480 TFT will be a great idea no? integer scaling is possible for all systems, and non-integer scaling is much better than in 320x240, less evident And are not difficult to find (i buy a 3.5" 640x480 LCD past year in ebay)

McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Posted: Fri Jul 24, 2015 7:56 am
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	theelf wrote McWill, what about vertical scaling? will allow 1:1? No, because the aspect ratio isn't correct. So some circles become oval. And that makes no fun! A 640 x 480 LCD was a idea, but is too expensive! The GG mod would be cost almost double the amount, because you also need additional hardware.

theelf Joined: 26 Dec 2013 Posts: 34	Posted: Fri Jul 24, 2015 9:47 am
theelf Joined: 26 Dec 2013 Posts: 34	McWill wrote theelf wrote McWill, what about vertical scaling? will allow 1:1? No, because the aspect ratio isn't correct. So some circles become oval. And that makes no fun! A 640 x 480 LCD was a idea, but is too expensive! The GG mod would be cost almost double the amount, because you also need additional hardware. The problem is that if the screen is 320x240, is impossible to make integer scaling for vertical How do you deal with this? any kind of bilinear filter?

badsector Joined: 01 Jul 2015 Posts: 152 Location: Berlin	Posted: Fri Jul 24, 2015 9:58 am
	Can the scaling be turned on and off? EDIT: Nevermind, I read in the description that it is possible.

D Joined: 01 Apr 2005 Posts: 250 Location: Almere, The Netherlands	Posted: Wed Aug 05, 2015 5:35 pm
	I got my pre modded game gear from McWill yesterday. He did an incredible job. I got a receipt with a company name, very professional. The work he put into it is simply amazing. You can't tell it's not original. Well, apart from the VGA connector sticking out from the bottom. The screen is incredible. GG games are scaled to fit the resolution, so there are some scaling artifacts if you pay really close attention, but there is no smoothing luckily. The scaling is done so that it results in full pixels. No filtering and no smoothing. As good as it gets. Also tried VGA, works perfectly, scaled to 640X480. You might need to adjust the aspect a bit, but that goes for most VGA output consoles and devices. No biggie. I trully have no downsides or cons to report and I am a critic. If you are still deciding, go for it. The question is how long stuff like this will remain available and untill what year are experts investing time into devices like these. The scanlines are activated as followed. Keep holding down start+a+b and the GG switches between normal and scanlines every 3 seconds or something like that. VGA mode is activated by turning down the contrast to 0. Again, McWill, thank your for such a stellar job. Your laber of love has not gone unnoticed. Funny thing is that I've never actually played a regular GG, but judging from videos and pictures the original screen straight up stinks. It is very comfortable to hold and play a GG, I was pleasantly surprised. It could just be the most playable handheld. Nice D-pad. And the speaker is really loud, amazing!

McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Posted: Tue Aug 11, 2015 10:26 pm
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	theelf wrote McWill wrote theelf wrote McWill, what about vertical scaling? will allow 1:1? No, because the aspect ratio isn't correct. So some circles become oval. And that makes no fun! A 640 x 480 LCD was a idea, but is too expensive! The GG mod would be cost almost double the amount, because you also need additional hardware. The problem is that if the screen is 320x240, is impossible to make integer scaling for vertical How do you deal with this? any kind of bilinear filter? Now the GG mod is available with new firmware: Selectable native resolution or scaled resolution on 3.5" LCD and VGA in GG and SMS mod by pressing the 3 buttons!

badsector Joined: 01 Jul 2015 Posts: 152 Location: Berlin	Posted: Wed Aug 12, 2015 8:09 am
	Nice! I can't wait to get my GG back with your new firmware :)

CMcK Joined: 23 Jan 2013 Posts: 20 Location: Scotland	Posted: Fri Sep 18, 2015 8:33 am
CMcK Joined: 23 Jan 2013 Posts: 20 Location: Scotland	McWill wrote Now the GG mod is available with new firmware: Selectable native resolution or scaled resolution on 3.5" LCD and VGA in GG and SMS mod by pressing the 3 buttons! I received my modded GG from McWill with this latest firmware and I have to say I am delighted with it. Lovely clear and bright image. Master System resolution games look great scaled and don't lose much screen size at native resolution. GG games are best left with the scaling on. The VGA output even looks good on a 1080 LCD. The fake scan lines option is actually pretty effective. Still looking for a good CRT monitor to use with this and my DC. It's great mods like this that help make the Sega 8 bit community the great place it is to be.

segasonicfan Joined: 05 Jan 2006 Posts: 374 Location: USA	Posted: Sun Nov 22, 2015 7:13 pm
	This is terrific stuff. I have one of the (now rare) Japanese GGLCD boards that started this mod off earlier in the year and am wondering what the added benefits to this board are. From what I understand there is: 1) added scanline feature 2) switchable resolution feature 3) backlight on/off switch and perhaps more. What I'd really love to know is if this supports PAL. I documented the mod to make GG into PAL mode a while back here and it would be great to play some PAL 50hz stuff without the glitching (like New Zealand Story, for example). Gotta save up my moneys for one of these after I finish my GGLCD mod! -Segasonicfan EDIT: just saw this thread for more info: http://assemblergames.com/l/threads/sega-game-gear-lcd-mod.57895/ Is it true that he stole your design McWill? That's really not cool :/

Revo Guest	Posted: Sun Nov 22, 2015 7:22 pm
Revo Guest	Yeah electronic PCB made these days are really rare^^

segasonicfan Joined: 05 Jan 2006 Posts: 374 Location: USA	Posted: Sun Nov 22, 2015 10:02 pm
	Revo wrote Yeah electronic PCB made these days are really rare^^ The GGLCD PCB by norix is, it is no longer in production AFAIK and it was very hard for me to obtain.

Pierre80 Joined: 12 Dec 2015 Posts: 1	Mcwill Posted: Tue Jan 12, 2016 10:14 pm
Pierre80 Joined: 12 Dec 2015 Posts: 1	Buongiono I sent for a review and installation of an LCD screen and VGA output on my game gear , excellent job , works perfectly ; thanks, I'm very sadisfaction

omp Joined: 13 Nov 2007 Posts: 219	Posted: Thu Apr 14, 2016 11:26 am
omp Joined: 13 Nov 2007 Posts: 219	Wow, I haven't frequented the forums for a long time and this comes out? Very nice!

Gear For Games Joined: 16 Nov 2012 Posts: 171 Location: York	Posted: Fri Apr 15, 2016 2:34 pm
	I have fitted quite a few of these, and they are perfect every time! 2013_0808_072622AA.JPG (1.62 MB) 2013_0808_072654AA.JPG (1.59 MB) 2013_0808_072721AA.JPG (1.73 MB)

marshalld12 Joined: 22 Feb 2014 Posts: 3	Posted: Sun Apr 17, 2016 9:00 pm
marshalld12 Joined: 22 Feb 2014 Posts: 3	hello mail sent ^^ thanks for this awesome work!

ynk1121 Joined: 09 May 2016 Posts: 1 Location: NY	Posted: Mon May 09, 2016 9:23 am
ynk1121 Joined: 09 May 2016 Posts: 1 Location: NY	I just wanted to say this mod is awesome. If anyone is on the fence about getting it like I was, go for it. Totally worth it. Completely satisfied. IMG_20160505_185618.jpg (3.23 MB)

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Mon May 09, 2016 11:28 am
	Can someone post a clear video of the screen scrolling (at different speeds and in different directions)? I'd suspect the integer scaling would bug me, so it'd help clear it up for others with the same issue.

badsector Joined: 01 Jul 2015 Posts: 152 Location: Berlin	Posted: Mon May 09, 2016 11:47 am
	Maxim wrote Can someone post a clear video of the screen scrolling (at different speeds and in different directions)? I'd suspect the integer scaling would bug me, so it'd help clear it up for others with the same issue. It bugged me, so I always turn off scaling. It is great for playing Master System games (e.g. using an EverDrive GG), though.

segasonicfan Joined: 05 Jan 2006 Posts: 374 Location: USA	Posted: Thu May 12, 2016 3:32 pm
	Thanks for posting these images and info. I've been super interested in getting one of these as an upgrade to the Norix board. Just need to save up money or wait for a price drop though. Mostly intrigued by the "pure" original resolution mode with side-boarders. Not a fan of the pixel stretching that the Norix board does. Also contrast / color balance seems to be an issue with these since the GG LCDs have quite a range from the model VA0 to the majesco. Royal Stone for example, looks great on my original GG - slightly muted pastel colors due to the blue and color dampening on the original model but it looks over saturated and nasty on an LCD or TV. Kind of interesting. -Segasonicfan

D Joined: 01 Apr 2005 Posts: 250 Location: Almere, The Netherlands	Posted: Sun Jul 10, 2016 9:59 am
	One last thing. I just got a GG everdrive, which also plays Master System games (& SG-1000) Master system games look glorious on the new screen. I understood that Master system games look horrible on the regular screen. So I just wanted to point out that this new screen ALSO makes for the perfect portable Master System. Still massively enjoying the screen.

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Color Issue Posted: Wed Jul 13, 2016 8:39 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Having issues with the color coming up yellow or a redish color. I attached a photo. Can anyone help me out with this issue. I checked all my wires and everything is connected correctly. I am doing this for a Cx that went to another place to get installed but could not finish the work. Board revision is PCB Revision 837-7996 / 837-7719-01 VA0. Thank you EDIT: The screen would flicker to the correct color then back to the yellowish/red color on every game IMG_3171.JPG (2.41 MB)

badsector Joined: 01 Jul 2015 Posts: 152 Location: Berlin	Posted: Thu Jul 14, 2016 11:22 am
	It is best to contact McWill personally.

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Thu Jul 14, 2016 3:18 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	ok

McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Posted: Fri Jul 15, 2016 12:07 am
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	belokk wrote Having issues with the color coming up yellow or a redish color. I attached a photo. Can anyone help me out with this issue. I checked all my wires and everything is connected correctly. I am doing this for a Cx that went to another place to get installed but could not finish the work. Board revision is PCB Revision 837-7996 / 837-7719-01 VA0. Thank you EDIT: The screen would flicker to the correct color then back to the yellowish/red color on every game It seems the colors are mixed up. This can caused from a short circuit at the old LCD ribbon of pads D0 - D3 or wrong CLK_32MHz trace. Please check again, if there are any short circuits. Have you further pictures of your wiring, especially the old LCD ribbon. BTW: I hope the GG was working correct before?

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Fri Jul 15, 2016 3:28 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	can you please post a picture of the CLK_32mhz solder point so that I have it correct.

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Fri Jul 15, 2016 3:50 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	I was not the original person who tried to install it, the Cx took it to another place to get it installed and thy could not finish the solder work. They brought it to me to finish the last 6 wires for the LCD pins. The other place also replaced a bunch of caps on the volume control board and on the main GG board. I am not sure if this is interfering with the color or if its a motherboard issue. The Cx does not know if the color issue was originally there or not. The other place that did tried to install it ripped pin 9 and loosen the old LCD pins. I had to solder directly to trace on a couple of them.

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Fri Jul 15, 2016 4:13 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Here are the install pics.. also I was not the one who recapped the board. IMG_3172.JPG (2.02 MB)

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Fri Jul 15, 2016 4:14 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	More pics IMG_3173.JPG (2.19 MB)

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Fri Jul 15, 2016 4:20 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	More pics IMG_3175.JPG (2.46 MB) IMG_3174.JPG (1.81 MB) IMG_3176.JPG (2.3 MB)

McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	Posted: Fri Jul 15, 2016 5:38 pm
McWill Joined: 17 Feb 2015 Posts: 8 Location: GERMANY	I think at pad 16 of the old LCD ribbon there could be a short circuit. Also at the IC2 near T2. Please also check C74 near the crystal X1. BTW: I would remove all wires, clean the pads and solder again. The wire CLK_32MHz seems to be OK. Attached you can see a picture of the CLK_32MHz point. You can use one of both points. Please let us know the result after checking. NinekoGG_VA0_2.jpg (867.75 KB)

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Fri Jul 15, 2016 7:50 pm
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	ok, I will let you know

belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	Posted: Mon Jul 18, 2016 3:04 am
belokk Joined: 13 Jul 2016 Posts: 9 Location: Maryland	I tried everything you suggested, and its still giving me the color issue. The only way for me to really test it, is by moving the LCD to another GG and test it. Unfortunately I do not have access to one and the Cx does not have another I can move it too. I told the Cx if they by chance get another one (untouched) I can move it over. The Cx does not know if it had this issue or not before going to the other shop to get it installed. I don't have info where the Cx bought the LCD mod either.

thatawesomeguy Joined: 25 Jul 2007 Posts: 730 Location: Melbourne, Australia	Posted: Sat Nov 12, 2016 3:07 am
	Very nice! So does this mean the pinout and data lines for the LCD have been fully reverse engineered and documented finally?

ICEknight Joined: 03 Apr 2001 Posts: 601 Location: Asturias	Posted: Sat Nov 12, 2016 5:38 pm
	Man, those games look pretty wrong in that screen... I'm not sure if I'm watching the same video as all the people who are saying that it looks great. If I understood correctly, you have to choose between pixel inconsistency or wrong aspect ratio?

Mozartkugel Joined: 28 Oct 2016 Posts: 3 Location: Finland	Posted: Mon Nov 21, 2016 12:26 pm
	I have a GG with MWill's lcd mod and it's really fantastic. You have to se it to believe it. If I remember correctly these are the modes: GG: scaled to fit, 1:1 (with black borders) and same with scanlines. SMS: scaled to fit, 1:1 with only small borders and same with scanlies. I think it is quite individual how you react to the scaled modes and depends on your relationship to the GG/SMS. I owned a GG earlier but couldn't really get used to the blurry screen, and I'm after all an original Lynx owner which has about as bleak original screen. For me it was a real retro ressurection to get a modded GG (which now can act as a true sms handheld ) and to get my Lynx modded. I would give this mod 10 out of 10, it's fantastic. But I still enjoy my Lynx mod a tiny bit more 'cause it scales 1:1 perfectly so that one gets 11/10 ;)

thatawesomeguy Joined: 25 Jul 2007 Posts: 730 Location: Melbourne, Australia	Posted: Wed Nov 23, 2016 12:12 pm
	I'm still more interested in the technical details. Is it piggy backing off the RGB signal or is it properly decoding address lines? I know replacement LCD was always a holy grail for my GG but I was never happy with effectively replacing the screen with a TV/monitor running from RGB, I want a real replacement that uses the same data lines.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Wed Nov 23, 2016 1:42 pm
	It's attaching to the data lines and in posts at AtariAge he says it's all digital.

thatawesomeguy Joined: 25 Jul 2007 Posts: 730 Location: Melbourne, Australia	Posted: Thu Nov 24, 2016 8:42 am
	That's what I gathered, would be good to document the pinouts and signal format in wiki.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Thu Nov 24, 2016 3:33 pm
	Yeah, but I get the impression he doesn't want to share too much, especially since it seems there was some weird ripping off of his device already.

thatawesomeguy Joined: 25 Jul 2007 Posts: 730 Location: Melbourne, Australia	Posted: Fri Nov 25, 2016 7:12 am
	Fair enough. I guess I'll have a crack at decoding the lines myself. I would prefer a more open source solution so future tinkerers can implement their own modifications, especially as available hardware becomes obsolete.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Fri Nov 25, 2016 7:25 am
	I think the gist is to decode it to a frame buffer, then resample up on the way to the LCD (via whatever binary encoding it uses). A more powerful chip (FPGA?) could do fancy upscaling but any upscaling causes blurring or other ugliness. Given that we know there are four (?) data lines and a clock signal, which the TV mod converts to analogue, I guess the signal is not that complicated?

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