On Jan 7, 5:41*pm, rebel wrote:
On Wed, 7 Jan 2009 15:01:46 -0800 (PST), mkaras
wrote:

I have several Belkin Model F6C120-UNV UPS units in need of repair.
These are 1200VA UPS units designed for 120VAC type operation. Can
anyone recommend where schematics for these may be obtained?

The most common fault with small "domestic/SOHO" UPS is battery dying due to
overcharging and drying of the electrolyte. *Assuming the behaviour of these
units is consistent with that, replace the batteries.

Sometimes fuses fail, sometimes the electronics fail. *But batteries are far
more often the issue.

Quickest test is to substitute an automobile battery (or as many in series as is
required to achieve the DC system voltage) and test the system.

If it turns out that the repair needed is simply to replace the sealed
lead acid batteries in these units is it generally considered cost
effective to do so or is one better off just getting a new unit.

I'd always replace the batteries rather than the whole UPS if:

. *the rest of the unit is sound and provides the capacity and functionality
required; and

. *there aren't "bells and whistles" on current models that are considered
desirable.

The only other matter - which does require a schematic - is to determine whether
the charge regime is being unnecessarily brutal on the batteries and causing
their premature demise.

That's funny, I just came here and started a similar thread.
http://groups.google.com/group/sci.e...1180dc38cc7881

The battery in mine went belly up. A new 12 V 7.0 a/hr sealed lead/
acid battery for mine is $38 at the local electranics store, or $ 20 +
shipping on-line.