[Don_Zalmrol]

So I've checked the PSU of the scope and it seems in rather good condition. What I do see is that the IEC socket and 230-110V switch have a blackish coloration on their leads.

The main filtercap of 2200uF 80VDC measures fine with my multimeter (2153uF and +- 6M Ohms).

The diodes measure +- 0.5V over them and in the reverse it's 0. Which means they should be ok.

In any case I will replace the components on this vertical mains inlet. The PST39 transformer (as showed earlier) have some wear and tear marks, but I believe this might be caused due to stress of a different origin.

Nowhere on the PCB(s) are there any indicators that somethings has blown a component.
So I believe the fault lays in the PSU itself.

I also believe that someone serviced it before as some of the torx screws were removed using a wrong screwdriver.

Any other things I better check out?