I've had a NES system for years that doesn't show certain pixels on one location on the TV screen for every game that is being played. I was wondering if purchasing a new 72-pin connector would resolve this issue?
Wild guesses: bad sprite RAM, problem with the PPU's sprite logic. It looks as if some sprites don't show up properly.
Does it start working if you chill the NES? Andrew Davie wrote in the nesdev group on Yahoo! that during lot check, where a game was tested on two dozen NES consoles, the game he was working on started flickering after a couple hours but stopped flickering when he sprayed Freon on the PPU.
Chilled NESes are also very popular for new years eve parties in cocktails. I like mine with sprite and cranberry.
LoL, thanks for the help guys. Have a Happy New Year! 
tepples wrote:
Does it start working if you chill the NES? Andrew Davie wrote in the nesdev group on Yahoo! that during lot check, where a game was tested on two dozen NES consoles, the game he was working on started flickering after a couple hours but stopped flickering when he sprayed Freon on the PPU.
Crazy. What would cause this? Was the PPU physically overheating?
Epicenter wrote:
tepples wrote:
Andrew Davie wrote in the nesdev group on Yahoo! that during lot check, where a game was tested on two dozen NES consoles, the game he was working on started flickering after a couple hours but stopped flickering when he sprayed Freon on the PPU.
Crazy. What would cause this? Was the PPU physically overheating?
Yes. The PPU was heating up to the point where it reduced the retention time for the DRAM used for OAM inside the PPU. If you have access to the Yahoo! Group, I can give you the link.
Sorry, I don't. What game was this? I wonder what it could be doing that was so intensive it made the PPU overheat.
It was The Three Stooges, and it was keeping the screen turned off longer than usual.