Broken NES help

[Eggman]

Hi all, I have an NES that I picked up at a thrift store that I am having some serious problems with. I have opened it up and cleaned the connector extensively, but I am not sure if that is a problem.

Whenever I try to load a game it either stays black, goes to a blue/green screen, or plays the intro to the game for 1 second then glitches and freezes with a tone playing.

If anyone has any ideas for me to troubleshoot this thing I would appreciate it.

Also, if it is not fixable, if anyone is selling a reliable NES please PM me with an offer.

Thank you for your help in advance.

[Masco73]

Most of the conflict, for me at least, is dirt in the game cart itself. SInce you are getting a partial picture sometimes, I would say that is the case. Make sure to clean the cart contacts completely. Sometimes you also need to wiggle the cart when it is locked down and reset it.

[Eggman]

I just tried it again, cleaned out my copy of Blaster Master with a cotton swab and alcohol. I powered it on and off, reset, and pulled it in and out several times but couldn't get it to change from the black screen.

[NES_Rules]

Did you try bending the pins back to their original position? This usually works, but a new 72 pin conector will work a lot better, they are made with better metals now a days.

Or you could disable the lock out chip, I was leary of doing this, but it actually does work.

[Eggman]

What is the lockout chip?

[MegaDrive20XX]

Videogamedaryll would be the man you need to talk to about fixing NES system. He's helped me lord knows how many times with the toaster models.

[segarocks30]

You could also consult the DP Knowledge base. :D

[Eggman]

I checked the knowledge base and followed all their instructions on cleaning the system, but it still doesn't seem to want to work.