Quoted from Boat:Hey 6803 pros , I have a Bally black belt and I’m not getting 43vdc on the power board . I tested all continuity and I’m getting proper AC from the transformer .
I replaced the bridge rectifier. The varistor is the one thing I haven’t replaced, question though. I’m not getting any resistance or continuity through it. Should I be getting something in my ohms from the multimeter? Or is it actually shorted fried?
Start at:
1) J5-2 [49 VAC]
2) FU1 [ 7Amp fuse ]
3) [49 VAC] at input to bridge.
4) output from bridge [ R1 600 Ohm 10W ]
5) to TP4 +43 VDC
Check all continuity... broken trace pads etc....
Notes:
Unplug all outputs on power module!!!.
remove Varistor, test voltage.. does 49VAC become present at bridge input?
If not, something is wrong with input AC voltage...
remove 600 Ohm resistor does 49VAC, 43VDC become present?
If so, test 600 Ohm resistor.. could be bad.