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Troubleshooting NES solid grey screen
https://forums.nesdev.com/viewtopic.php?f=9&t=16567
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Author:  bassybeats [ Fri Nov 24, 2017 6:06 am ]
Post subject:  Re: Troubleshooting NES solid grey screen

So, I got the unit working.

It was the small BR6116-100 static ram chip. I ended up socketing a few chips on the board for 'order of elimination' and swapped the ram chips around. I then got scrambled graphics but Mario loaded. CPU and PPU were fine and I just need a new ram chip. I stole a ram chip from another board that currently has no video and the PPU is getting real hot and tried it in this board, it now works perfectly.

Thought i'd give an update.

Cheers

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