Hello friends. I posted a problem with this machine last week before I purchased in and it seems as though I was misled about the problem. What's happening with my Williams Flash is that the Drop targets are not being reset and the ball is not being kicked out of the trough. It appears as though the coils are not firing that perform those functions. The previous owner replaced the coils for the drop targets and replaced the motherboard with no results. He didn't say anything about the trough coil not kicking the ball out. When I first fired this machine up I thought I was smelling something electrical getting too hot. The trough coil did work once before the problem started. I turned the machine off and started touching and smelling everything to see if I could find the problem. Today I took off the cover to expose the coil which will not work at all anymore and the paper cover is all burnt looking much like the other coils that were replaced. There are other coils on the machine that look the same way and are working so this may not be an indication of anything. If anyone could tell me a good way to figure this problem out I would be most grateful. Many thanks in advance.

Yes all fuses good.

I removed the driver board and found 4 TIP120 transistors either cracked or with chunks blown out of them. These are solenoids 1 2 3 4. 1 is a Ball release, 2 Bank reset (Top), 3 Bank reset (Bottom), 4 Bank Reset. Not sure if the transistors are just old and died or if there is an underlying issue that is making them fry. They're so cheap I guess I'll replace them first and see what happens. If anyone thinks that there is something else I should be doing before I replacethem please let me know.