WH20 fuse keeps blowing

[Spandangler]

Hi group

Me and me old mate Si are tackling a barn find WH20. It was properly soggy and ****ty when we found it and came with its fair share of issues. We're getting there but are currently stumped on this issue concerning the lower right flipper. When you put the fuse in the holder on the fliptronics board it immediately fires the coil then blows the fuse.

Any ideas??

cheers in advance

Gaz

 

[Sgt GrizZ]

Bad diode(s) on flipper coil ?

 

[Moonraker]

Swap with another fliptronic board - if the problem remains then it's likely to be a bad diode on the flipper coil or the coil's shorted (remote possibility connector) or flipper pcb or associated connectors. If the problem goes away then it's a problem with the fliptronic board.

 

[pinballmania]

The transistor on the fliptronics board is short circuit. Replace it and the diodes on the flipper coil as a precaution.