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2600 "vader" rolling screen


Jack Burton

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I purchased a 2600 "darth vader" console recently. Everything works on it, except the screen rolls rapidly. I've tried the following:

 

-cleaned my carts

-changed channel to both 2 and 3.

-tried various televisions

-replaced the tv<>computer switch with a phono>f-connector adapter

-connected to a tv with a vertical hold adjustment

-adjusted the two adjustable pots on the motherboard inside the system

 

Nothing seems to have had any effect. I assume there is a bad capacitor or transistor somewhere that is preventing me from getting proper vertical sync, but I've looked at the board and I don't see any bad cap or weak solder joints.

 

Any ideas? Is there a cap related to v-sync?

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  • 7 months later...

I purchased a 2600 "darth vader" console recently. Everything works on it, except the screen rolls rapidly. I've tried the following:

 

-cleaned my carts

-changed channel to both 2 and 3.

-tried various televisions

-replaced the tv<>computer switch with a phono>f-connector adapter

-connected to a tv with a vertical hold adjustment

-adjusted the two adjustable pots on the motherboard inside the system

 

Nothing seems to have had any effect. I assume there is a bad capacitor or transistor somewhere that is preventing me from getting proper vertical sync, but I've looked at the board and I don't see any bad cap or weak solder joints.

 

Any ideas? Is there a cap related to v-sync?

 

 

Did you ever figure this out? I have almost the exact same issue on a Vader 2600A. I cleaned all contacts and rechecked the solder joints. My 2200 uf capacitor has a small crack in it - could that be causing the issue?

 

My screen looks like this:

 

83aKAAHl.jpg

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