A game console released in North America by the Nintendo Company in 1985, called the Nintendo Entertainment System, model NES-001.

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System only runs Mario/Duck Hunt. Out of ideas, need help!

Okay, so I'm kinda new to fixing NESs. So I've been following a lot of how-to's online and trying a lot of easy fixes, but so far nothing has worked. As of right now, I have boiled the 72 Pin Connector 3 times, I have cleaned it with alcohol twice, I have cleaned the contact points on the NES every time I have boiled the 72 Pin connector, and I have disabled the lock-out chip.

I no longer get the Red Blinking Light, and I can get the NES to run both of my copies of Mario/Duck Hunt about 70% of the time, but I can't get any other games to work at all. And before you ask, yes I have cleaned the games, multiple times even. This is a second NES that I got basically for free that I am trying to fix and sell/gift. All of my games work on my personal NES.

I'm kind of just out of ideas at this point, and I'd prefer not to buy a new 72-Pin collector if I don't have to, but if there's nothing else I can try, then I'm open to doing that

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Deck the Halls
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4 Answers

If the games work fine in your other NES, I would recommend replacing the 72 pin connector. It is an inexpensive part and will most likely fix your issue.

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I would try using the "broken NES" with the 72 pin connector from the working NES, if it works, thats the issue. if it doesn't, then I would try replacing the mother board or try plugging in the cartridges in to it while disassembled to see if the cartridge loading mechanism doesn't make a good connection.

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First, try blowing on the cartridges. It may sound crazy, but it sometimes works! If this does not work, then I would put in a new 72 pin connector. Try to make sure it is not a third party one. If possibl3, get the real deal.

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I mean possible

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At this point, the only thing that could cause this is the 72 pin connector, also, I don't think that boiling the 72 pin connector will help with this problem. You may have ruined the 72 pin connector by boiling it 3 times. Water NEVER fixes electronics, only makes them defunct. In the future if this happens again, just replace the 72 pin connector. NEVER try boiling it again. It is an inexpensive and easy to replace part. Good Luck!

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cjloftin will be eternally grateful.
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