[TechAssist] Admirall Md#A12327-C, Chassis 25X609-00AA
- From: "William Rayburn" <premtech@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 19 Jan 2004 16:02:25 -0800
Above unit came in with HOT Q502 shorted, F104 open and R432 burned. Replaced
these components and IC410 and Q400 to be on the safe side. Checked over and
resoldered the usual connections in and around T505, esr'd the caps and
replaced C431 as questionable. Set fires up on iso-transformer at 90v but R432
off pin 2 of IC410 immediately gets hot and would burn if I'd let it. Checked
out the diodes beyond that circuit and tested Q420, Q510 and Q403 but not
finding the problem. Anyone had this particular problem with this chassis
before.
Could really use some help.
Bill
William H. Rayburn, CET
NESDA Member
Premium Technologies
PO Box 442
Long Beach, Wa. 98631
(360) 642-4993
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