RE: House power and damaging kit!!!

["Paul Gale" <groups@xxxxxxxxxxxxxxxx>]

Interesting - I guess they probably do have SM PSU's. Are surges etc
not likely then on turning the power back on?

Paul.



> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Keith Doxey
> Sent: 22 August 2006 14:52
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] House power and damaging kit!!!
>
> Hi Paul,
>
> Do the failed items all have Switched Mode Power Supplies ?
>
> If so, it is probably just due to heat. Capacitors in the startup
circuit
> of
> an SMPS can dry out due to the heat and will continue to run as long
as
> power is not removed. Once the power fails, the PSU will not start up
> again.
>
> PACE Analogue Satellite Receivers suffered quite badly from this as
they
> often ran at elevated temperatures due to poor air circulation in AV
> cabinets. After a power failure they would die but unfortunately not
> silently. They used to go with a very large BANG that took out several
> components including the transformer.
>
> HTH
>
> Keith
>
>
> > -----Original Message-----
> > From: Paul Gale [mailto:groups@xxxxxxx]
> > Sent: 22 August 2006 14:45
> > To: ukha_d@xxxxxxx
> > Subject: [ukha_d] House power and damaging kit!!!
> >
> >
> > A couple of times now, turning off the main house power and
> > restoring it has somehow damaged kit, I guess from a surge.
> >
> > First time was last year when my heating controller (linked to
> > Comfort) was damaged and yesterday, one of my network switches.
> >
> > Should this be allowed to happen in a standard house wiring
> > scenario - I guess there's nothing to stop it???
> >
> > So - is there anything I can fit the the house electrics that
> > will stop this happening again?
> >
> > Thanks,
> >
> > Paul.
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> >
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