Shadow no flashers Solved

[Sven Normansson]

This one has me stumped.

I get AC voltage at the power board J102 (so the transformer output must be good)

Fuse is good, checked continuity throughout the circuit.

I have changed BR4 & C11

I get no voltage at TP7 (20V)

Thus no power for the flashers.

I have tried another board and get the same.

 

[pinballmania]

Continuity between bridge and capacitor? Component side solder joint not making contact under component?

 

[Sven Normansson]

Tried 2 different boards with the same result. Either the input voltage is wrong or it's something obvious

 

[pinballmania]

Check continuity of the common ground. Your ac is independent of ground but your dc becomes referenced to ground. Possible a break in the grounding somewhere. Is the earth braid continuous to the back plane?

 

[Sven Normansson]

And the answer was....

... wire come off the coin door interlock switch. Now a full set of flashers. Thanks Andy for the sanity check.