Famicom - Grey screen

[number47]

Is the problem related to corrosion and short in trimmer? In my opinion the wrong position of trimmer cap should mess up only colors not the whole picture.

[80sFREAK]

Some sort of oxydation. Lots of communication equipment made in late70-late80 suffer from these trimmers failure.

[number47]

Ok. Shaken - not stirred but still the same. Still seems like cart connection error because it doesn't matter if the cartridge is in or not. Tomorrow I'm going to try with replacement slot.

[80sFREAK]

First try 600grit sandpaper.

[number47]

Now the situation is even worse. No signal at all. I must have shorted something 
PPU is not warmer than before, but CPU gets hot quickly.

[maxellnormalbias]

Unless you want to replace the CPU and game card slot, I think it's better to just get another Famicom.

[number47]

Cartridge slot replacement is nothing special - been there, done that. CPUs and the next Famicom are still travelling somewhere between Asia and Europe