If blowing on the Metroid cart and shimmying it carefully into the system isn’t working for you anymore, don’t start looking to replace your old NES just yet. Retro Gaming Hacks author, Chris Kohler, published this video howto on repairing an old NES.
The 72 pin connector that the game cartridges plug into are notorious for becoming corroded and eventually failing. Thankfully, you can pick up a new connector for a few dollars and replace it easily using a phillips head screwdriver.

RSS for MAKE
but if i crack my nes open, it will void my warranty!!!!
Mostly you dont even need a new connector, its enough to clean the contacts.
So basically, i plug everything in like normal, but the power seems to just turn off and on like its blinking. There looks like there is nothing wrong with the power cable but ive tried it on two different nes systems and it is doing the same thing. any suggestions???
this happens to my snes ad n64 how can I fix this problem on these systems?
thanks
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RedPark TTL iOS Cable Breakout Pack
Exclusively in the Maker Shed, this updated Redpark Breakout Pack for Arduino and iOS makes interfacing your iPhone, iPad, or iPod touch with the real world easy! This bundle includes the new RedPark TTL Cable for iOS so a TTL adapter (and soldering) is no longer required.
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