Was going over DCV measurements on a LED driver board, powered from AC source supply. Everything was what you'd expect, then DMM caused short on DUT and AC PSU went to OCP. Highest voltage on board is DC bus, 320V. Nothing the meter hasn't seen before. Both supply and DUT recovered no problem but DMM suffered error 1153. Looking inside, some analog power rails are down. Only 6VA = 10V.7V , 18VA = 22.8V and -18VA = -22.8V left, nothing on +5VA, -5VA, +15VA.
If i try switching measurement types, it gives communication error...
Anyone experienced this before?