7800 video problem

[Jones567]

Hi I got a Atari 7800 system for a good price from a goodwill and got a power supply and hooked it up and I got no video or audio I took the system apart and checked the insides I started by cleaning the cart slot that did nothing so I started playing with the color and audio nobs and that did nothing the system doesn't play 7800 or 2600 games is there a way to fix it as the power led comes on and I do get a black screen

[Jones567]

It sort of works on my copy of turmoil it will show a sort of rainbow scrolling thing on the screen and if you hold the pause button it makes noise other then that you can't play the game

Edited May 22, 2016 by Jones567

[Jeremy Popp]

I had a 7800 once that had similar symptoms. It turns out, one of the chips had corrosion on 2 of it's little legs. They were socketed chips, so I didn't even notice the issue at first. I was able to wire up and solder a bypass, and the console worked great afterwards.

[Jones567]

I had a 7800 once that had similar symptoms. It turns out, one of the chips had corrosion on 2 of it's little legs. They were socketed chips, so I didn't even notice the issue at first. I was able to wire up and solder a bypass, and the console worked great afterwards.

 

I only have 1 chip that's socketed what chip was is for you?

[Jeremy Popp]

It was the bottom left, I sold the console, but here is my repair (orange wire):

 

 

[Jones567]

I noticed that my board looks different and I see a weird trace the going on

[Jones567]

Here

[SwampFox56]

Wow... that's what I call 'cold solder-joint hell'. Although, it could still be other problems. I'd be happy to take a crack at repair it for you ) Feel free to send me a PM.

 

EDIT:

 

nvm, you already did

Edited May 24, 2016 by SwampFox56