Monitor Causes UPS relays to Cycle (after fault)

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Sorry for the long winded post but there is a bit of history to
this.

Items involved are a Sola 305 UPS (manual and specs here
http://lit.powerware.com/ll_download.asp?file=sola620rm.pdf ) ,
an old  HP 6306 (AP) Computer (in new case with larger power
supply separate sound card ) and its HP M40 D5269A Monitor.

Initial fault  (yesterday) was that the computer's BIOS (running
XP Pro) stopped recognising the DVD and CD writers (Pioneer and
Acer) on about 90% of boot ups.  Unknown to me until later (when
the UPS failed) my family tells me that this was preceded by
what may have been a power surge (flickering of lights, lights
went off then on again brighter for a moment) while I was out.

Twice while trying to determine the fault the UPS went through a
phase where when it was turned on the relays continually cycled.
As the UPS sits on top of the large computer case, and I had
just had the PC case open, the first time I thought it was a
wire inside the case hitting the fan. Turning the UPS off both
times stopped this.

Shortly after the UPS died (no power to any of the 3 protected
outlets).  The monitor also appeared to die ( no pic)  but
reseating the PC's video card seemed to fix this.  Opening the
UPS I found a vaporised small section of mains track on the UPS
PC Board at its thinness point (the plastic case was also
blackened above this) which I have repaired by soldering a mains
gauge copper wire across the small (2mm)  gap in track. This
repair seems to have fixed the UPS.  However the UPS now cycles
its relays if I connect the monitor to any of the protected
outlets (it also seems to rapidly cycle the monitor's power
supply).  The monitor and UPS work fine if I use the monitor on
an unprotected outlet on the UPS  or from another separate wall
outlet.

The BIOS is still not always finding the optical drives on all
boot ups so I am tempted to just go out an buy a new UPS anyway
while Dick Smith has them on special .   I wonder though if I
should also be concerned about the monitor and perhaps the power
supply inside the PC.  Any views on the cause and if I should be
looking further than just replacing the UPS?
--
Regards
Blue

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Re: Monitor Causes UPS relays to Cycle (after fault)


oops wrong link for the UPS manual ; try
http://lit.powerware.com/ll_download.asp?file=sola305.pdf

--
Regards
Blue

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Re: Monitor Causes UPS relays to Cycle (after fault)


Hmm its the 250VA Sola UPS.  This machine is used by my son and
I have just discovered that since he added a set of Logitech
powered speakers to it he's been using the monitor in a
unprotected outlet on the UPS (the speakers plug pak wouldn't
fit). Perhaps that additional 12 V 1 amp plug pak was also just
enough to exceed the UPS capabilities but I would be surprised.

--
Regards
Blue

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