3rd/4th gen Clean Sweep over heating /over voltage issue

ComettheStag

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canal fulton, Ohio
I have 2 Clean Sweep boards that are both having issues with the potentiometer overheating. I have replaced the pots and the bridge rectifiers on both. On board 1 the claw isn't closing so I think the claw relay burnt out but before that the pot was over heating. On board 2 when I test the new rectifier out of the board its fine but when I test it in the board it's failing. I cant see any crossed traces on either board but if someone else has any insight it would be appreciated.
 
I have 2 Clean Sweep boards that are both having issues with the potentiometer overheating. I have replaced the pots and the bridge rectifiers on both. On board 1 the claw isn't closing so I think the claw relay burnt out but before that the pot was over heating. On board 2 when I test the new rectifier out of the board its fine but when I test it in the board it's failing. I cant see any crossed traces on either board but if someone else has any insight it would be appreciated.
Check your input voltage at the wall. I am seeing local linemen stepping up voltage. It generally is dissipated as heat, but some components can't handle it. The utilities like it since you pay more.

Your voltage should be below 125 VAC, and ideally around 120 vac. If it's higher than that, you may need to talk to your local utility and tell them it's too high, and equipment is being damaged. Use those words - it will get them moving. They can come out and make a tap change.

If you have two boards with the same problem, I'd also suggest metering the cable to the crane from conductor to conductor on ohms, looking for a short. Generally, you should see heat or a blister or damage if it's that hot, but it's possible you won't.
 
Check your input voltage at the wall. I am seeing local linemen stepping up voltage. It generally is dissipated as heat, but some components can't handle it. The utilities like it since you pay more.

Your voltage should be below 125 VAC, and ideally around 120 vac. If it's higher than that, you may need to talk to your local utility and tell them it's too high, and equipment is being damaged. Use those words - it will get them moving. They can come out and make a tap change.

If you have two boards with the same problem, I'd also suggest metering the cable to the crane from conductor to conductor on ohms, looking for a short. Generally, you should see heat or a blister or damage if it's that hot, but it's possible you won't.
Thank you so much I didn't even think yo check the harness. I also checked the line voltage and it came back at 117 so that was fine however there is a short in the claw cable that I will have to trace.
 
Thank you so much I didn't even think yo check the harness. I also checked the line voltage and it came back at 117 so that was fine however there is a short in the claw cable that I will have to trace.
You found the problem. Carefully troubleshoot it and you'll solve it.

You might just source a new claw cable. If one shorted, they others aren't far behind. Look anywhere the wire gets stressed (e.g., runs into something, is at a sharp angle, etc).

The key is to find the one with the right number of wires.
 
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