Crystal Lake, IL
Quoted from donnPin:I am truly scratching my head. I was changing light bulbs on the playfield and had the game in test mode with lights flashing.l I have been told now I shouldn't have done that... I did. Now, when I turn the machine on, the MPU does not come on (no LEDS flashing). The MPU I have is a Altek and I tested the TP's and the two that are supposed to be 5 volts, are only reading .09 volts. So, I read the manual to the determine the problem. It indicated that I should check the solenoid driver board (TP1 I believe) for 5 volts. NO VOLTAGE there either! I studied the schematic and it appears that there is a reg (Q20 E-710 in the middle of the heat sink) that may have something to do with the power to the MPU. Without buying a bunch of parts and dragging this issue out, am I on the right path here? Can changing the bulbs with the machine in test mode create this problem? Thanks for any advice...
Lets start with what game? I assume a solid state Bally?
