Hey guys,

I recently picked up a SS Cleopatra that is in need of some serious TLC. I have been trying to follow the power up process from pinrepair.com and I want to verify exactly where my issue is currently. I am not getting anything from the displays at all. I have tested to the voltage at the display fuse (from the fuse holder to the ground strip adjacent) and got 35V. Should this not be ~70V? I tested the display voltage output on the power supply and it looks like I am getting nothing at all there.

I am assuming the issue lies with the power supply. What should I test from here?

Thanks

No ideas?

I got pretty lucky on the battery front. I don't see any leakage at all and little if any corrosion.

I recapped the power supply and grounded the negative side of C1 to the backbox ground plane. I am still not getting voltage on the 60V pin at all. Testing at the pin to the negative side of the cap.

I tested the A2-P1 pin 6 (69 volts AC (blue/wht/red)) to the negative side of the C6 cap and got 0 volts AC. I tested the A2-P1 pin 7 (69 volts AC Return (org/wht/red)) and got 32ish volts AC. I tested at the power supply connector and at the transformer and got the same readings. This leads me to believe that I have a bad transformer. Would this be correct?

Thanks!

I tested on A2P1 and found that pins 6-7 are only reading 35VAC. I tested at the transformer and found the same results.

I tested by connecting a lead on each pin and using the 200VAC setting on my meter.

Okay, so I think I found the real issue.

I tested all the pins on the power supply input and they were all around 20-35VAC. Way above what they should be for the first two sets of pins and all really close to each other. So I went back through the chain and retested the bridge rectifiers. Not sure what happened or if I just tested them poorly the first time but they are both reading as shorted out now. So I need to replace those and see how it goes from there.

Hopefully it will just be these cheap parts and the machine will be at least playable until I can start on a full clean/restore.

I will get the parts and report back if that solves the issue.