Quoted from Black_Knight:My high voltage DC circuit @ test point 2 is only putting out 152 volts instead of the 220 it is supposed to.
All other test points are good.
A lot of digital multi-meters will only read around 150V at TP2 on the rectifier board. You can ignore this.
If you're only getting 4V out of the 5V regulator, the DC voltage going into the regulator may have lost its filtration.
Measure the voltage directly on the large C23 filter capacitor on the solenoid driver board: black meter probe on the negative capacitor leg, red meter probe on the positive capacitor leg. You should measure somewhere between 14 - 16 volts DC.
Suggest re-soldering the heat stressed solder joints on the rectifier board at fuse F3 and diodes CR5, CR6, CR7 and CR8.
Newcastle, OK
