Mine only measures 149. But that's with j1 and j3 unplugged. Is that normal then?
Displays not coming on indicates the HV fuse is dead, or the voltage is too low. They need around 175VDC.
But Mitch indicates it could be normal without load - probably right. Been a while since I've done a Bally - How about testing the theory by connecting up J1 and J3, but maintain that the MPU has its connectors disconnected.
Then you can check TP2 for 230VDC on the Rectifier board
You can also check the test points on the Solenoid Driver board - Check Clay's guide for correct voltages.
Question - When the MPU was in circuit - how many times did the LED flash ?
