Congo Bongo Graphics glitches.

Khatru311

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Donor 3 years: 2021, 2023-2024
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I have this annoying bug on my Congo Bongo. On power up, the game has additional characters randomly on the screen. If I power off and on again they are gone and the game plays normally. Any thoughts? I was told this might be a ground issue but everything is grounded as far as I can tell.
 

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These have really bad and flaky rom sockets. You'll get graphic artifacts if the legs aren't making good contact. I would remove and clean all the rom legs (400 grit sandpaper light sanding or fiberglass pen), and bend the pins outward slightly wider before reinserting. The sockets make contact on only the outsides of the legs.
 
These have really bad and flaky rom sockets. You'll get graphic artifacts if the legs aren't making good contact. I would remove and clean all the rom legs (400 grit sandpaper light sanding or fiberglass pen), and bend the pins outward slightly wider before reinserting. The sockets make contact on only the outsides of the legs.
Thank you!
 
I had something similar on Zaxxon last week. took boards out, quite certain I extracted every rom and I think 2 rams and popped them back in and Zaxxon lives again.

please don't hate me, I don't discriminate. ;)
 
I had something similar on Zaxxon last week. took boards out, quite certain I extracted every rom and I think 2 rams and popped them back in and Zaxxon lives again.

please don't hate me, I don't discriminate. ;)
I love Zaxxon and wish I'd never sold mine to pay for games I never received in Oregon.
 
I had something similar on Zaxxon last week. took boards out, quite certain I extracted every rom and I think 2 rams and popped them back in and Zaxxon lives again.

please don't hate me, I don't discriminate. ;)
This fixed the issue in case anyone else has this problem. One of the chips out of all of them was absolutely filthy. The legs were black. I sprayed some deoxit on them as well.
 

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