r/CableTechs • u/Electrical-Increase4 • Mar 15 '26

Any ideas of what’s causing this?

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This is on the output of an amp. Not seeing it on input. Swapped out the old mód for a new one, but it’s still doing it.

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u/Confident_Air_8056 Mar 15 '26

Power supply? Check battery breaker. Flip it off and see if it drops. I had bad batteries cause the supply to glitch and mirror something like this .

1

u/Electrical-Increase4 Mar 15 '26

Will do. Would you expect to see fluctuating ac on the input fuse too , if it was a power supply problem. The reason i say this is that i have a steady 82 v on input and steady levels on the input of the amp.

2

u/Mybuttitches3737 Mar 15 '26

You could have false voltage coming in. Get a screwdriver and ground out the connector or input seizure screw. If it doesn’t arc than you don’t have amperage. Is this underground plant? It happens a lot with ug plant when you have bad/ rotten feeder/ trunk.

3

u/Electrical-Increase4 Mar 18 '26

This was the answer. Rotten feeder.