Hello, purchased a used pair of JBL 705p monitor speakers, and I have found that 1 of them has tripped circuits 4 times.
1st time plugging in, tripped upstair circuit.
2nd time switching off switch next to IEC cable, tripped whole house.
3rd and 4th time on downstairs circuits, tripped when the extension that its plugged into was turned on at the wall with the rest of the setup.
This is over the course of a couple weeks.
I got out the Megger BM80 and tested the insulation and it’s at 370MegaOhms both poles to ground.
The device works fine when on, seems to be in a state of powering on or powering off. I have not yet opened the unit up as I am unsure if its the unit or something on my house, advice needed.
Any more tests I can do here, only really had a similar issue with a 1500VA step down transformer in the past doing the same thing.
All advice is greatly appreciated.