Is the resistance part important? None of the X2 rated caps that I see mention a separate resistance. In fact the usually tout low ESR.
QUAD FM4 Power supply repair
- Thread starter MikeMA
- Start date
Is the resistance part important? None of the X2 rated caps that I see mention a separate resistance. In fact the usually tout low ESR.
From page 28, middle of the left column of the service guide, it looks like it is across live and neutral after the power switch and before the fuse. It is N1 I’m the diagram.
chiily
PFM Special Builder
One thing I am confused about of the correct placement for an X2 cap. Should it be between L and N on the power input side, or on the switched power side?
Pete MB&D
Pete Maddex, the one and only!
After the switch otherwise you will get a shock from the plug after you unplug it, I used to do Tv repair and one make had it before and if you didn’t discharge with a screwdriver it would bight you later.
Pete
Last edited:
John Phillips
pfm Member
Quad FM4 component N1 in the service manual. I have had this expire on my FM4 and another Quad box. But both boxes have worked fine without (as others have written).
If you are buying a replacement for soldering into the PCB then RS components do something that looks very close and should work (in bags of 5). See Buy snubber capacitor online from RS Components (rs-online.com). Datasheet: 0900766b8171cb5c.pdf (rs-online.com). Probably the original is 47 nF or 100 nF + 100 Ohms in series but do check the right lead spacing for the PCB from the datasheet. Other sources are probably available.
If you are buying a replacement for soldering into the PCB then RS components do something that looks very close and should work (in bags of 5). See Buy snubber capacitor online from RS Components (rs-online.com). Datasheet: 0900766b8171cb5c.pdf (rs-online.com). Probably the original is 47 nF or 100 nF + 100 Ohms in series but do check the right lead spacing for the PCB from the datasheet. Other sources are probably available.