NES VRAM Replacement Needed

[megasdkirby]

Someone on Facebook said that there is a good chance it's not the VRAM or the WRAM, but the PPU or even the CPU. Problem is, if it is, I need to get them from AliExpress. Wish there was a US seller, though.

I may also create a test NES if I get another "as is" console from eBay or locally. That would help quite a bit.

I will let you know the progress!

[Gameguy]

Thanks, I'll keep checking with your progress. I wish I could be more helpful.

If it's a problem with the CPU, maybe you could look towards Adrian's Digital Basement on youtube for advise? He seems to diagnose and repair vintage 8-bit computers with similar issues and ends up replacing chips on a regular basis, even just figuring out how to diagnose defective chips might be helpful in this case. I just remember he had defective CPUs in the past that he needed to replace. I think he has a website with contact information as well.