I got a hyperball last weekend and have been repairing it this week. I had a weird lamp matrix problem where the ground wire coming from the bridge rectifier to the power supply had its insulation melt off it got so hot. There was also a weird problem in the lamp matrix where it was strobing all the lights. After confirming that the bridge and the cap for the lamp matrix was good, I decided to take a look at the transformer. Somehow two balls had made it through to the transformer and were shorting some lugs. I have seen a lot of things that go wrong, never expected to see that!!

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I had to remove the screen/guard to get to the transformer, I am going to have to seal off that area better.

I will post some pictures this evening. I am glad that I was able to figure this one out, it is such a fun game to play.

Correct, there is another cap mounted in the lower right of the backbox. Its for the shooter coil and should have a power resistor across it. The negative side has a black wire going to the negative (-) side of the bridge. Positive side has two wires that go to the ball shooter coil lugs on the playfield with a molex connector breaking them (I am holding in picture).

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