[TechAssist] Re: RCA CTC197AS
- From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 20 Nov 2002 11:24:26 -0600
Don't cheat on the parts:
r14107 244214 43ohms
r14109 179317 1/4w 750ohms 5%
r14108 244215 .1ohm 3W
q14101 244223
q14102 147665
q14103 232218
q14106 215495 smd, maybe bad
q14107 215495 smd, maybe bad
q14108 215496
u14101 223653
u14102 231525
The failure was probably caused by u14102. This is a precision reference
IC. Although the opto-isolator is probably good for the buck it costs it
isn't worth the gamble. Also, very carefully check all of the pins on the
switchmode transformer, ensuring that the traces are good.
This power supply needs about 80vac to run. It is a frequency modulated
regulator.
Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl. 32506-3310
850-456-5995 voice
850-458-6369 fax
Mailto:Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com
----- Original Message -----
From: "Edward Gaidies" <teltek2@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, November 20, 2002 10:35 AM
Subject: [TechAssist] RCA CTC197AS
>
> This set cam in with main fuse blow. Q14101 shorted (Switch)237469 and
> R14125 (35 ohm) scorched. Since this is my first CTC197, are there any
other
> parts I should be concerned with, such as a "kit". Or is it normally all
> that will have to be replaced?
>
> Thanks guys....never to proud to ask. ;-)
>
> -Ed-
> Ed Gaidies
> Tel-Tek Electronics
> Ontario-Canada
>
> teltek2@xxxxxxxxxxxx
>
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