[sdiy] EMC mains filter failure - why?

[René Schmitz]

Julian wrote:
> I should have made the point in my earlier post - the filters on two
> cabinets failed.  One was plugged in for testing, failed within 10 mins - i
> foolishly put it down to chance component failure. The other unit was later
> plugged in, also failed in a similar time frame.
> 
> Both units had not been used for an indeterminate amount of time, and had,
> prior to my use, just been transported from some across the country (not
> internationally - same voltage grid)
> 
> Would this shed any more light on the situation?

A bad lot? Or moisture creeping in?

I find it hard to believe that a IEC contact would get hot when there is 
only ~20W -> 100mA going through it. The contact would have to be very 
bad for this to matter. On anything high power, without doubt this would 
be an issue.

Maybe you should dremel up the filter and have a closer look.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159