Hi everyone. Recently I switched on my Centaur game and I only got three flashes on the MPU LED . I traced the problem down to the fact that when I pull off the "playfield" connector from the rectifier board in the cabinet, the machine starts as supposed (all seven flashes). The voltages on the rectifier board with only AC in are: TP1=7.4V, TP2=148,5V, TP3=12.2V, TP4=6.6 V AC, TP5=43 V.
Any hint will be highly appreciated

Thanks in advance
Best wishes
Matt

"If you reconnect the playfield to the rectifier board, but disconnect J2 from the MPU board (J2 is the playfield switch harness), does the machine start ok with 7 LED flashes on the MPU board?"

Hi, thanks for the answer! That´s exactly what I did before I checked the rectifier board - and I got all 7 flashes!
The voltage measurements on the RB were all done with only the two transformer connectors plugged into the board!
Greetings
Matt

Hi again. Thanks..I´ll try to fix it as soon as possible...I´m afraid it won´t be till mid May..lot´s of other work to do
I'll keep you informed!
Best wishes
Matt

Hi again,
problem solved! It actually was the leaf of the left rollover switch touching the lampsocket near it!
Greetings
Matt