GBA backlight mod help/question?

So I've been trying to do the gba backlight mod. I have a 40 pin gba so I bought a 40pin adapter. After connecting it all together and turning it on the screen is all washed out. After researching I found this thread.

http://gbatemp.net/threads/gba-backlight-agb-001.328487/page-36

According to the thread if you attach REVC to GND, it can fix the washed out screen. And it did fix it.

Next I run into my second problem. While the screen seems to work right, if it stays on the same screen for a while then moves you still see everything from the screen before ( like ghosting). It then slowly disappears.

Any help would be appreciated.

I've tried two 40 pin gba's I am starting to think it may be the Ribbon adapter.

Also sorry if this is incoherent and for formatting.

The screen I'm using is from a AGS-101. It does not have this problem when hooked into the sp.

 

I've had ghosting in all the ones I made.

It varies in seriousness with the 40 to 32 pin ones. Can't remember which gets better results. For my own 40 pins no extra cables were welded. I plugged ig and everything was fine. I need to solder more wires with 32 pins If I remember well or it wont light up.

I had one which was washed out once but doing what you did fixed it too.

As for ghosting I havent seen any solution and most people seemed to mention it too.

 

I believe the correct term is image retention. It's very similar to the IR on a plasma TV, although it disappears far quicker on the GBA.

I actually wanted to thank you OP, because I've had a modded GBA lying around for a while where the screen was too bright and washed out. The page you linked to helped med too (REVC to GND). The colors now look correct, but I too have the image retention problem, which doesn't look too good. I haven't read all the way through the thread yet, but I'm hoping there's a solution somewhere.
I PM'ed a guy on Shmups who did this mod, and he said he has zero IR on his, so it's probably a GBA/Cable/Screen mismatch :/

Mine is a 40 pin GBA too

 

I just finished my 40 pin backlight mod and I'm noticing image retention too. Haven't found anything new on Google yet but I'll report back if I find anything.

 

Anyone discovered a way to get rid of the image persistence yet?

 

Has anybody figured anything out? I've been messing with the same thing for almost an entire day. I'm so mad right now. It's taking everything inside me not to punch babies. I've followed instructions from Rose Colored Gaming and I've also resorted to the GND RECV COM connections and it's still washed out and imbalanced colors. Please, someone help. Here's a picture of what I'm dealing with.

 

what screen are you using on these? OEM from an SP?