Palette RAM error?
First look for bad traces.
Then could be a dead RAM or another IC (latches, etc.).
Can you confirm the model of the unit and what psu you are using? could be pallete ram error
I think it did the same thing, maybe with a slightly different image, but I'll check again when I get home later. When it wasn't working I looked up and found the diagnostic test to try with no cartridge and that's what the picture is from.What does it look like with a game inserted and when was the last time you cleaned the slots/games?
They are copper tracks making connections between ICs and all others components (below is just an example, nothing to do with the Neo).I don't know much about circuit boards and this kind of stuff. Are traces the connections with the tan/blue cylinders on them? IC?
What does it look like with a game inserted and when was the last time you cleaned the slots/games?
As James had said what does it do with the cart installed after you tried cleaning the cart slot and cart contacts?
Yeah it says "Use pro-pow ac adapter only". I did some reading when I couldn't find my original AC adapter to make sure it was right, and I think I have the right PSU.Hi if it states on the sticker under the neo "use pro-pow ac adapter only" 5v 3A should be correct psu
It looks like one or two broken traces to/from the Neo-G0 chip, I'm not sure which chip that is in the 1st gen chipset. I'm guessing either the PRO-B0 or PRO-C0 or an inline 245 somewhere.
Check for broken traces on the board or install a diagnostic bios.