[TechAssist] Re: CTC197 Headaches,

  • From: Edward Gaidies <teltek3@xxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Thu, 26 Aug 2004 08:52:34 -0400

Thanks Guys....

I should have asked for this info 3 weeks ago, Might have been fixed by  
now.;-)

Thanks to all, and thanks for attachments.

-Ed-
Ed Gaidies
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx




On 26-Aug-04, at 8:25 AM, Shoreline Electronics wrote:

> Check these scenarios.
>
> On switching supplies like these , I try and check EVERY resistor and  
> diode
> and transistor in the primary and feedback loop to be safe..time  
> consuming
> but worth it.
>
>  Pull the Horizontal output out to prevent any over regulating  
> disasters!
>
> ---------------------------------------------------------------
> Text pasted from WinSTIPS 2.0
> http://www.ServiceSoftware.com
> ---------------------------------------------------------------
>
> RCA   CTC197
>
> Repeat Failure Of Regulator.
>
> Garris Tv - New Bern, Nc
>
> Replaced U14101, Q14101, R14146, R14145, R14125.
>
> ---------------------------------------------------------------
>
> RCA   CTC197
>
> Dead, Fuse Blown
>
> Bryce - Vision Video Labs, Inc
>
> Replace Q14101 (Irf740)  #237476, U14101 (Ctda4605-3)  #237476 And  
> R14125
> (100ohm)
>
> ---------------------------------------------------------------
>
>
>
> ==========================
> Jeff Stielau
> Shoreline Electronics Repair
> 344 East Main Street
> Clinton,CT 06413
> 860-399-1861
> 860-664-3535 (fax)
> jstielau@xxxxxxxx
> ========================
> "If you push something hard enough it will fall over."
> Fudd's First Law of Opposition - Sir Sidney Fudd
>
>
> ----- Original Message -----
> From: "Edward Gaidies" <teltek3@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, August 26, 2004 8:17 AM
> Subject: [TechAssist] CTC197 Headaches,
>
>
>> Anyone got any fixes in their database for a CTC197CN1  Model F36685.
>> Customer said originally set was chirping even though it was not on.
>> Fuse was blown when I started to work on it, and Q14101 was shorted.
>> Have replaced Q14101, Also replaced R14146, Turned set on, and
>> instantly shorted out Q14101 again. Replaced U14101 and Q14101 again,
>> {now nothing, no relay click, just dead.} This is my first CTC197, so
>> any help would be appreciated. This is a 36" set and customer is
>> willing to spend a reasonable amount. I guess what I need is the
>> Troubleshooting Guide, a some help from some that have had some
>> personal experience on this chassis.
>>
>> Thanks;
>>
>> -Ed-
>> Ed Gaidies
>> Tel-Tek Electronics
>> Ontario-Canada
>> teltek3@xxxxxxxxxxxx
>>
>>
>>
>>
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