Hi, My nes only displays a white screen when switched on with a game inserted. I have changed the 72 pin connector to one which I know works, cleaned the contact points the connector slides onto and used a game with clean contacts, which I know works. Still only a white screen. My thoughts are there must be a fault within the circuit, but which components should I look at (I have a dead system which does not power up I could canniblise parts from)? Again here I have checked to see if any components have poor solder joints and cannot see any problems. Can you help?

These symptoms are a pretty good indicator that it probably is your 72 pin connector that is grimy, pitted or too lose. The first option is to get a 72 pin connector cleaner. It's built like a NES game you put in and pull out to clean the pins. That works if the pins are not pitted or loose. You can pick one up for about 8 bucks or less. The second and (IMHO) best option is to replace your 74 pin connector. It's not that difficult, and can be accomplished with a Phillips screwdriver in about 10 -15 minutes. nesrepairshop.com supplies directions with the ones they sell and it's not hard. The pin connectors run about 10 bucks. I would go with replacing the connector or sending it in to a shop and have them do it for you if you don't want to attempt it.

Hi, probably need a new 72 pin connector, or you have bad capacitors or broken traces. we fix all those, check it out www.consolesolutions.net/nes