Unfortunately I have had the power off issues again. In the last couple of days i've tried to do a couple of small prints (1 @ 25-mins, 1 @ 45-mins) and in both instances, the machine has just switched off mid print.
The machine just turns itself off at random times. I have removed the power supply and conducted power tests and when it is working, it provides a clean and constant 12-volts on both channels. However when it fails, there is 0-volts on both channels, with the full 240-volts being delivered into the PSU from the mains power plug.
It does not seem to be an issue with the actual power switch, as I’ve also tested continuity across the poles too. It seems to be an issue within the PSU, and I’m not going to pull that apart myself.
I've sent an email to Prusa support as in previous communications regarding the Thermistor fault, they said they would replace the PSU if it still happened.