Help to identify PSU cap

[Chr$]

In an XT clone PSU I have a couple of these filter caps on the AC side...

They are marked CM.1K / 250VAC / TSE.

The 250VAC is clear and the TSE part is probably the maker, but what about the CM.1K? 1kuF, 1knF? CM is possibly the case type designation.

Thanks.

 

[modem7]

If that cap sits on active and neutral, then it is probably a line suppression capacitor of {0.1 µF, X class}.
See the 'Line Suppression Capacitor' section of [here].

 

[Chuck(G)]

Given that it's sitting next to a pair of (blue) MOVs and is adjacent to the transformer, it's a noise suppression capacitor.

.1 µF, 250V AC. A X-rated (safety) poly film capacitor should do the trick. Why are you replacing this one? it looks fine.

this sort of thing Common as dirt on eBay.

 

[Chr$]

Thanks, yes I thought it must be the equivalent of a Rifa, but slightly different. I'm in the PSU because it exploded. The cause seems to be a transistor, which has taken out 4 resistors in the vicinity (and hopefully nothing else). I thought I may as well at least have spare line suppression caps in case they die next.