I have a Firepower that I just recently realized is not firing the flashers under the the two hotdog inserts on the playfield.
I currently have two 89 style flashers in the sockets.
Both bulbs test good.
All wiring on the bulb sockets are good.
I have replaced the small diode on the little board by the flashers (Pic below)
The larger Diode seems to test good with my meter but has obviously gotten hot over the years (Pic)
Just for fun I replaced the driver transistor #43 on the driver board with no luck.
Today I noticed a single wire that had come disconnected where the backbox connects to the cabinet.
It is the wire in the photo below that is all by itself with a single molex connection.
The wire happened to be the color Brown/Violet that the manual says drives the flashers so I thought I had found the problem. But after reconnecting it, I still get no flashers at all.
Any ideas what to try next?