Hi,
I have a Raspberry Pi plugged in a UPS which I switch off when not used.
Recently I've noticed that the power on led of the Raspberry blinks and fades
away every 5 seconds with the UPS switched off.
I measured ground to live and ground to neutral on the UPS output socket
and they show 229V!..
Is this normal?
Should I throw the UPS in the bin?
When I switch on the UPS the connected devices work normally.

I've tried to measure any leakage current to ground and the BM235 showed nothing, instead it
started showing 'DIODE' when I connect the leads.. I took off the 10A fuse and it shows no continuity!
Like its damaged. I doubt that more than 10A passed from live to ground on a switched off UPS.
The fuse looks new, no explosion were heard, no sparks were seen.

How is this possible ?


Thanks.