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BrianAlex BrianAlex is offline
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Default Uninteruptable Power Source Fuse trouble shoot,fuse location etc.

Hi. I have a UPS that is not functioning correctly. It's an APC
"Professional Powercell" 250 watt
unit that is at least 5 years old.
When there is a power outage, it beeps loudly but there is no current
to the outlets (computer is plugged to this).
I took out the 12 v lead battery and it tests 13 volts.
I pushed the "re-set" button.
I dismantled the case ("no user serviceable parts) and there is a
note to use only the same size fuse. Well there is no indication where
the fuse is,and I believe this may be the problem since at one time I
had too much stuff plugged in (not being aware of it's 250 W limit).
There is an orangish part that looks like a plastic plug-in
automobile fuse that says"40" on top and on the solder side says "40A
32V". I checked from this side and it has continuity,plus the element
in it appears solid.
Would there be a fuse somewhere else? I don't see one.
Also I see a "APCC (C) 1993" on the board so maybe this thing is that
old.
What else would cause this failure?
I consider this a learning opportunity,and I am a cheap so-and-so and
will not be paying the big bucks for a new one any time soon!
Your advice greatly appreciated.-Brian