Re: CM12U unresponsive

["Mal Lansell" <mlansell@xxxxxxx>]

Just by chance, I came across this yesterday...
http://www.geocities.com/ido_bartana/CM11Aoverheating.htm


----- Original Message -----
From: "Keith Doxey" <ukha@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, December 22, 2003 8:33 PM
Subject: Re: [ukha_d] CM12U unresponsive


> Quoting Stephen <yahoo@xxxxxxx>:
>
> > Can I ask if you plugged anything into the same socket? Mine
seemed to
> > fail last time I plugged a vaccum cleaner into a nearby socket. I
have
> > wondered if electrical interference was somehow to blame?
> >
>
> Vacuum Cleaners can cause horrendous spikes on mains wiring. A few
years
ago I
> had a site where the phone system would reset itself at about 6am
everyday. A
> mains analyser showed a huge spike at about 6am.
>
> By a process of elimination the only thing we could think of that
would be
> operated at about that time would be the vacuum cleaner as the
cleaners
were
> the only people in the building.
>
> Opened up the cleaners cupboard, dragged out the "Henry" and
plugged it
into
> the most convienient socket in the reception area, (which was on the
opposite
> side of the wall to the one for the phone system so electrically they
were
> about 6 inches apart). As I plugged it in it sprang into life because
the
power
> switch had been left in the ON position. It was a bit noisy and the
> receptionist was trying to answer a call on the switchboard so I
turned it
> off.... "CLUNK" .... all calls cut off and the system reset
itself so I
had
> found the culprit.
>
> Spikes can be VERY damaging, unfortunately most things you do to try
and
> suppress them will have a very detrimental effect on X10 as by its
very
nature
> as a Power Line Carrier is a deliberate form of interference.
>
> Catch 22 and all that :-(
>
> Has anyone actually performed a "Post Mortem" on a CM12U to
find out
exactly
> what has been fried with a view to either repairing it or beefing up a
Vanilla
> CM12U to prevent it being fried in the first place ?
>
> Keith
>
> www.diyha.co.uk
> www.kat5.tv
>
> UKHA 2004: 15th and 16th May 2004
>
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UKHA 2004: 15th and 16th May 2004

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