I’m having an issue on Bram Stokers Dracula where none of my flashers on J125 and J126 are working. These are all flashers in the playfield and backbox. The speaker panel flashers on J124 do work. My driver board voltages are good, both 5 and 20V. The J125 and J126 pins have 20V on them. U3 appears to control just the flashers which are having the problem. U3 was already socketed by the previous owner due to this issue. I removed the socket and all traces appeared to be very good, I reinstalled the socket and still no change.
The previous owner had a flasher lock on under the coffin. It appears the transistor and U3 were replaced. I have not been able to get the flashers to work since this occurred.
I’m looking for any suggestions for what to check next.