Upon power-on, the unit runs thru a series of beeps and buzzes (normal, as I recall), then the overload indicator lights up and the unit beeps continually.
Is the unit toast, or is there a relatively painless fix?
Thanks.
----dale
-- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P
perhaps a toasted output transistor, not too hard to check / repace.
NT
On Tue, 24 Oct 2006 20:54:58 -0700, cdm Has Frothed:
Does this with nothing plugged in?
-- Pierre Salinger Memorial Hook, Line & Sinker, June 2004 COOSN-266-06-25794
I've worked on one of these. First off, APC is NO HELP whatsoever, they do not, will not, give out any technical info. The extent of their "technical service" is a trade-in program whereby you donate your slightly damaged unit to them and they sell you a brand new unit for nearly full price. They guise this as "protecting their proprietary technology" even if you're trying to fix a unit that's 20 years old.
Check your output transistors... they are likely 60A N-channel enhancement mode mosfets and they ain't cheap. The unit I worked on smoked 8 out of 16 of them. They are riveted to 4 heatsink plates and soldered to the board. Be REAL careful removing them as the tiny hair-like board traces tend to like to come with them.
Dave
I picked up a new battery last week from Chris Ewert, president of Uninterruptible Solutions.
In my conversation, I asked him what were the 3 most often seen problems with the UPS units he repairs and refurbishes (he has seen thousands of APC and other UPS units)
In order of most seen, failures or other problems:
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