Hey guys. This is probably a stupid question with an obvious answer but I just want to know, what does a bad PPU look like on the screen? Solid gray, some pixels? What about a bad 373? My system is showing repeated graphics. Top part of the screen is duplicated but cut off on the bottom. I'll post a picture soon. Happens with every game. I've swapped out the 72 pin, replaced the voltage regulator but haven't touched the caps. I don't think those are the problem. Cleaned all my games with brasso and 70% IPA, they work fine in my two functioning systems. I used a multimeter to test voltage of the 373 and PPU, both read at 5V. I hope the PPU is not the issue, those are not easy to find. Thanks.
Here's what it was displaying before and after I replaced the 373. I'm not sure what else the problem could be. Any ideas?