Re: Tech - WPC - Wh20 flipper - blowing fuses

I'd replace all the diodes and see where you are at. Problem persists I'd
replace coil, diodes, and drive transistors. LTG :)

"pinrad" <radmccarty@xxxxxxxxx> wrote in message
news:393062c4-bdb7-4e6a-89f7-0762421104e5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Flippers work for a while (one or two games), then they blow a fuse.

Background - flippers were rebuilt, but the outside lugs on the coils
were wired backwards. In switch test mode, they immediately caused a
reset (coils wouldn't fire - machine immediately reset when the
flipper button was pushed). Wiring was corrected and everything
worked for a short period of time (less than two games). First, the
lower right flipper stopped working. Fuse was blown. Installed a new
fuse, also checked the coil diodes - needed to replace one of them.
Power the game back up, play another game - everything was fine for
about one game and then the lower left flipper dies. Checked the fuse
for that flipper and it is blown.

Question - I plan on replacing the diodes for the coil on the left
side, however, do I likely have a problem upstream on the Fliptronics
board that needs to be addressed? Or, perhaps I had a diode problem
on each flipper because of the reversed wires and once all the diodes
are replaced at the coil everything will work fine...? If there is
something on the Fliptronics board that needs to be addressed, I'd
love some technical (and directions to help me navigate around that
board - I'm not a technical kind of guy - which is pretty obvious
given my problems with reversing the wiring...).

Thanks in advance, Conrad.



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