Screen Issue (Color) Kite's Circuit Sword

[Brownie]

Hello Sudomod!
I've completed my first pi gameboy with the circuit sword. Everything is great except the screen. Something is wrong with the color. Attached are pictures of the problem and the test image. I tired reconnecting the ribbon several times and held it in different positions to see if that had an affect. It did not. Any ideas?

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[tinkerBOY]

Do you have a spare LCD? I was testing my DPI Adapter and used it on my recent Game Boy 3 build when I got into same issue as yours. At first I thought it was just a ribbon connection problem but no. Also checked every pins on the fpc ribbon connector but all connections were fine. I tried a different LQ035NC111 LCD and boom works just fine. I guess all of the LQ035NC111 manufactured are not created equal.

[tinkerBOY]

Also make sure the DPI settings in config.txt are correct.

[kite]

If you push down on the top of the compute module connector (the white big thing, around the area of the wifi chip in the corner) does this affect anything on screen?

Also try pushing the ribbon that is inside the LCD into it, like where the ribbon meets the metal case - push it inside slightly.

Hopefully one of those two will show something and I can recommend action accordingly

[Brownie]

I've tired pushing the ribbon cable in where it meets the LCD. I also pressed all along the white plastic that connects the compute module. There was no change to the display. I found 2 screens cheap on e-bay that I'll try as a replacement. Thank you tinkerBoy and kite for your help troubleshooting this issue.

[Brownie]

I've tested the two new screens and they both display incorrectly in the exact same way as the first. I now have three screens that display the same issue so the problem isn't the screen. What can I do more to identify the problem? Thank you all very much!

[kite]

Cool, at this point it's best to return the CSO + CM3 back (it could be either or both being the problem) and I'll replace what is needed please send me a PM to sort this out!

[mike5im5]

Hi,

I seem to be having similar issues. Did anyone work out what it could be?

I've tried:
- HDMI output (works fine)
- Tried different screens (same issue)
- Tried with different CM3 (same issue)
- Tried with different versions of retropie (4.3, 4.4) (same issue)

Any other suggestions?

Mike

[kite]

If all those are exhausted, then it is probably a solder point on the DDR2/CM3 connector itself not fully making contact.. if anyone is brave or has a good enough microsope/magnifier, these are the pins (the ones highlighted slightly whiter):



Otherwise send to me and I'll sort out, I see you've already sent me an email

[speakerphone]

This seems like an appropriate place for this question, but I'm having a screen issue...or i'm just stupid...but my screen is very much tinted yellow..Ive tried re connecting the ribbon cable and it dosn't seem to do anything. Is this just how the display is? Or am i missing something? thanks