STP 2nd Edition Harley Pinball Flipper Burning up

jrivelli

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This game was working just fine, however the right flipper would get stuck up on random occasions. An extra tap to the flipper while playing would fix it.

Finally the flipper went pop and the fuse under the PF for the right flipper was blown. I put in a new fuse and resoldered on the wires to the coil since they were a total mess.

The Problem: Now when I first power the game up the right flipper gets stuck open and the coil becomes extremely hot after 30seconds.

Any thoughts on what I might have done here?


(took quick picks of each flipper. The red flipper is the left, working flipper)
 

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hopfully you just need to replace a diode on the coil or the flipper switch.if the flipper dosnt move freely with game off .well now for sure you need to replace the coil.and being you got it so hot you might have fryed a transistor or pre transistor on the board.good luck
 
When a flipper stays up adn the coil gets hot like that, it's telling you there is a short somewhere and if left long enough, will melt the coil and could blow a fuse again.

Not knowing that game myself, a drive transistor on the board must be shorted out.

If your wires are not touching and diode if there is one on the coil is present, the short is in the coil diode or the board.

The manual will tell you what diode on the board is bad, but can you solder yourself and fix it? If not it'll have to be sent out for repair.
 
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Yup yup.

i'll switch out coil diode first and then I'll need to snag a manual online and find the board transistor and replace that bad boy.

I can solder well and all that jazz, just still horrible at diagnosing pinball errors.

A manual would help :p
 
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