Hi all.
I've a problem with my old Sunny Technologies PSU (model ISO-P500SPP). After it didn't power on anymore, I opened it and saw that a capacitor mounted in passive PFC board was exploded, a fast diode beside it was in short circuit and fuse was blown. I replaced fuse and diode (FR157).
I replaced capacitors too (marked Teapo 2,2uF 400V SEK105°C) with two 450V 85°C capacitors, but after a while they went in leakage another time. I'd like to ask you if I'd need to use low ESR or any other special type of electrolytic capacitors.
I attach a part of schematic I designed...