have you checked the plug that goes into this and the other boards?

Will have to watch this thread. Almost bought one this week but decided i will tried to fix my hacked up board first.

Voltage is important obviously, but amperage is also important when it comes to the strength of the pops. What you'll want to do first probe the PSU and watch for voltage drops when the coils are activated, it is also expected to see a small voltage drop whenever a coil is activated. A large drop of several volts is not good though, andf could mean that there is an issue on the MPU, perhaps a faulty driver or pre-driver transistor that is shorting and pulling down volts when activated, or the PSU itself it under-rated in the amperage department to drive the coils properly. This is all speculative though, since I don't have the stuff in front of me to check it out. Solder connections to the coils as well are always crucial for proper power transfer. The fact it worked previously leads me to believe you may need to examine you secondary transformer incoming lines. You could have a faulty off-board rectifier.

Sorry for being complicated. You can put your meter in AC mode and check the ac voltage that supplies the coils power and make sure that is healthy. Then from there on, you check the DC voltages after the ac has been rectified and make sure they're straight. Just follow the schematics.

So here is your power transformer in the bottom of the cab:
tmnt-1.png

The right side are you secondary outputs (taps) on the transformer. The two white/red wires are you 25v AC wires for coil power. If you set you meter to AC volts and probe those two wires, it should read 25v AC.

From that point, those two white/red wires go to you PSU to get rectified to DC. I dunno where (looks like on the top right) of that new aftermarket PSU there are several test points. Set you meter to DC and put the black lead on the gnd and make sure all of those test points give you the proper voltages silk-screened onto the psu board. +32v?? should be coil voltage, so one of those test points should read +32vDC.

If it is just the pops that are weak, you have a separate issue.