[TechAssist] Re: Toshiba TX37662, chassis TAC9195, cause of shorted HOT
- From: <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 26 Dec 2003 14:01:09 -0500
Kevin,
Review that model number...possibly similar sets...from Tech Repair CD:
TOSHIBA\CF3566A\shut down issues\\\TAC9190\Open cap C871 (22mfd/50V) on the
SMPS board. Q840 (LM78MR05)
that was outputting about 5.75VDC on a pin that should have been a steady 5VDC
Standby\ESR all caps and
check solder connections\\\\\\\
Toshiba\CX3583\Relay Clicks Then Goes To Tic-Tic.\Start Up Problem Q404
Fails.\\\Shorted Q404 Transistor.
2sc3892a. Rca # 190483. Change Capacitor At Input Of Driver Transformer. C416*
10mfd @160v. Replace Open
C871 22/50v In Power Supply.\\\\\\\\
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "Kevin" <kevintv@xxxxxxx>
To: "TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, December 24, 2003 7:30 PM
Subject: [TechAssist] Toshiba TX37662, chassis TAC9195, cause of shorted HOT
This monster of a set has 3 separate boards: P/S board, signal board
including HOT and vertical, and flyback board with second HOT. First
HOT was shorted but flyback rings good. Replaced many vertical caps and
C871, a 22uF cap in the P/S. The cap in the P/S had high ESR. My
question is, could this cap have caused the first HOT to short? I
pulled all three boards so have no way to test it, except in the home.
Has anyone had experience with this model, or might someone have a
print? TIA
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
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