Hello
I have a Keithley 2400 SMU that produced a spark from a probe and now doesn’t read anything sensible, reading 23v without anything connected. The probes were not currently measuring or under any load at the time, just being moved to connect to a photovoltaic device. It seems something has blown inside the unit however it still turns on fine without displaying any error message. I'd like to repair the unit as it still seems to function. Any ideas what I could try next for troubleshooting?