Donkey Kong Voltage Adjust

bungy

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For the life of me, I can't find any posts about adjusting the +5 on Donkey Kong. Is it possible to adjust? Or do I have to rebuild the power supply?

I'm reading 4.8v on all the chips and the sound is doing very strange things. During attract it will randomly play game sounds or garbage and I'll lose sounds or get repeating sounds during game play. The problems are intermittent.
 
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Pretty sure there are some adjustment pots INSIDE the power supply casing (some disassembly required). Never used them, but pretty sure they're in there.

However, 4.8V at the chips should be fine, it's surely over 5V at the PSU. Heck, my cabaret runs 4.67V at the chips I think last time I checked, and it runs 2 and 4-boards all day long.
 
Thanks for the tip. I'll try adjusting it anyway just to be sure.

My sound problem is definitely a board issue but it's not the 8035 chip. I don't know why sounds would randomly play during attract mode.
 
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