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Museum of the Game® & International Arcade Museum® Forums
I recently picked up a Congo Bongo cabinet that was converted to a heavy barrel. It was playing blind. The fuse was blown. I jumped the fuse and it came on and looked pretty good actually. I know…dangerous, and not smart. I did it anyway and nothing happened. l won't do it again. I've learned a lot so far. Anyway, was working but had a wave rolling from right to left ( I believe this would be top to bottom when considering the way it's mounted?) I shut it down and ordered a cap kit, cleaned the chassis as good as I could and did the cap kit (including the filter). I would say the cap kit made it look better overall but the wave remains. After lots of googling and chatting with Grok, these are things I have done
Cleaned edge connector.
Tested all grounds..all checked out good. Even added a few extras here and there…no change
Tested voltages on the power supply ( it looks to have been installed somewhat recently) all voltages were within range and stable.
The sync wire was ran to the -V and jumpered to -H, I tried removing the jumper and also just running the wire to only -H. No change
Tested B+ voltage at leg farthest away from tube on R503. A steady 154vdc
Where do I go from here? Voltage regulator? When I did the cap kit I reflowed the jumpers and a few other areas I felt looked suspect, and tried my best to check for any more problem areas but I admittedly don't know what the heck I'm doing here. I had one extra capacitor that had a location I cannot find. I wanna say c373. And the instructions had two different capacitors shown for c702. One had an higher voltage so I used that one. I don't know if that was right. Appreciate any direction.