[TechAssist] Re: Toshiba CF3566a--clicks--need schematic
- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 11 May 2004 16:44:25 -0400
Richard,
From Tech Repair CD:
TOSHIBA\CF3566A\Relay Action No HV/Audio\\\TAC9190\Shorted
H.O.T.=2SC3892A*Cause:Bad Solder
T401=Horiz.Drv.Xformer\Preventative Maint.:C416=10/160v 105C\\\\\\\
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\\\\\\\
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "Richard La Placa" <continentaltv@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 11, 2004 10:37 AM
Subject: [TechAssist] Toshiba CF3566a--clicks--need schematic
Hello all
Tiitronics said service manual is nla. Have a low resistance path from hot col
to gnd. I opened hot &
damper&still same. Looks like maby inside the horiz out transformer, but I
don't have a diagram to
trobleshoot this one. It has a strange circuit that looks like the real old
zeniths with the separate
horiz transformer feeding a high voltage transformer.
I hate to go through a whole lot of trouble just to find that one of these
transformers are internally
shorted and also nla. Any help is very much appreciated .
Richard La Placa
Continental TV
312 a Park Row
Chestertown, Md, 21620
http://www.continentaltv.homestead.com
410-778-1113 (voice & fax)
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