[email protected] wrote:
I have now had two identical failures of Schaffner filtered mains sockets
on ex-mil 7150plus DMMs, although I'm not suggesting the ex-mil source is
particularly relevant.
In both cases there has been an internal component failure within the mains
socket that caused it to emit smoke around the edges of the metal filter
cover, accompanied by a brown goo and a very unpleasant smell.
Interesting. There's what, nearly half a dozen reported failures now?
- 2 of yours
- 1 of mine
- and someone else who emailed me the other day about possible
alternatives to the Schaffner filter unit
It is, in all likelihood the X2-rated mains filter cap that's blowing --
I've seen a similar fault on BBC Micros when the X2 caps fail in those,
which causes the same brown smoke emission. In those, however, the smoke
doesn't usually condense and stick...
I suspect if I ever get another 7150+, I'll be swapping the line filter
on the instrument's arrival...
--
Phil.
[email protected]
http://www.philpem.me.uk/
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
