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Lost one sound channel on my System 2X6. Replaced the 4 SMD capacitors near the LA sound amp chip (heatsinked). Values are as follows: C16 & C19 - 2.2uF, C17 - 100uF, C18 - 47uF.

Hopefully this info can help someone. I had a Pandora’s box 5 arcade version in my Chewlix that would have intermittent problems with player one 5th button (pin 26). Sometimes it would act normal then suddenly act as if it was always on and grounded. Turned out to be a faulty surface mount...

I had a Wei-Ya (Makvision/Billabs ) 3129D chassis in my AWSD that had severe pincushion on the sides and turning the pot on the remote board had no effect. All other controls on the remote board were working correctly. After referencing the schematics and testing against a spare but similar...

Had a Nanao MS-2934 that was slowly losing the green color and eventually lost green entirely. Pulled the transistors C4001on the neck board and they all tested good out of circuit. Rotated between the colors anyway. No change as expected. Tested zener diode ZD311 on-board that was feeding...