[TechAssist] Re: Toshiba CF3566A, TAC9190 intermit. instant shut down

Are you aware of these?

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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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TOSHIBA   CF3566A

Dead

Phil Hull

Traced Down Problem To Low Reset Volts On Pin 44 Ica01 Ic 840 Defective Part
# 23318299     L78mr05-Fa

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TOSHIBA   CF3566A

Dead / Ticks

Phil Hull

Found A Shorted  D-442  Part# 23316250     ( Erd08m-15 ) Located On Main
Board

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TOSHIBA   CF3566A

Dead Or Relay Clicks



Reg Chip Ic801 (  23319619 )
Cap C863 ( 24677470 )
R860 And R866  (0.18 Ohm At 1 Watt )  24004704
Shorted  D-442  Part# 23316250 ( Erd08m-15 ) Located On Main Board

Check For Any Shorted Or Leaky Diodes And Capacitors On The Secondary Of The
Converter Transformer.

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TOSHIBA   CF3566A

Dead, Ticking Noise When Plugged In

Dash 2871

H.O.T. Q402 2sd2578 Nte2353, C416 10/160

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TOSHIBA   CF3566A

No Sound Or Picture  Fast Tick

Bryn Mawr Tv  John

Replaced  Q402  (2sc3892a)  And  C416   (10/160v)  High Esr T 401 Driver
Transformer (23224972)

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TOSHIBA   CF3566A

Power Supply Is Just Ticking



Check: Reg Chip, Ic801 (  23319619 )  Cap C863 ( 24677470 ) R860 And R866
( .18 Ohm At 1 Watt )  24004704. Check For Any Shorted Or Leaky Diodes And
Capacitors On The Secondary Of The Converter Transformer.

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TOSHIBA   CF3566A

Power Won'T Turn Off - Later The Set Would Not Power On

The Speaker

Replace The Power Relay.
C871 Bad 22uf / 50v
Located Off Collector Of Q870 On Power Supply Board

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TOSHIBA   CF3566A

Relay Action No HV/Audio

Bruce  A-1 TV  Van.Wa.  1/99

Shorted H.O.T.=2SC3892A,Cause:Bad Solder T401=Horiz.Drv.Xformer Preventative
Maint.:C416=10/160v 105C

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TOSHIBA   CF3566A

Set May Work -  Off/On - Relay Clicks

Hugh/  Main Tv       (Set Weighs 200 Lbs!)

Re-Solder All Suspect Connections In/Around Center Board Front Right
Side--Where Large Heat Sinks Are.  Resolder T401 Can Tap On Large Heat Sinks
To Cause Problem.

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TOSHIBA   CF3566A

Shuts Down - Intermittently Shuts Off Or Won'T Turn On

Austin Tv & Electronics

Found Defective C342 & C871

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TOSHIBA   CF3566A

Shuts Down - Intermittently Shuts Off Or Won'T Turn On

Don Hutcheson'S Tv Service  Ul 216v  Ch Tac9190

Check For Dry Caps In Power Supply - Suspect C863, 47/160v - C871, 22/50v

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Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com


----- Original Message ----- 
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, August 29, 2003 12:11 PM
Subject: [TechAssist] Toshiba CF3566A, TAC9190 intermit. instant shut down


> Customer said once it came on, it worked all day OK.
> Problem is at turn on.Push power, hear the click and HV crackle,then
> instantly shuts down.Had to unplug awhile,then plug in,try again, may
> work OK. The incidence of shut down got worse over time,til mostly dead.
> It's heeeeeere! And it's working.
> Hate intermittants.
> I heated the chassis boards, flexed,shook, ran it.
> I need some histories on this model for this. Looks like three seperate
> large boards, a flyback has a seperate HV block between it and CRT.
> Where's X ray pin for starters(about 9 months ago another shop repl. HOT
> and two lytics).
> Phil Bader
> -- 
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
> For Professional Technicians Only
>
>
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