[TechAssist] Re: [TV] CTC169 - Dead
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 11 Jan 2007 14:56:24 -0500
David check pin 1 of the Flyback should be around 145 to 150., volts in
standby. This is the supply voltage that goes to the HOT. You should be able
to check it with a meter. If it is high like 180 volts then your kit for the
regulator circuit should solve the problem. When you turn on the set the HOT
voltage drops to 143 volts. I have a print that can be sent if needed.
Bruce.
----- Original Message -----
From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
To: <tv@xxxxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>
Sent: Thursday, January 11, 2007 9:49 AM
Subject: [TechAssist] [TV] CTC169 - Dead
> Hello Techs,
>
> I have a CTC169 that is dead, the SMPS chopper transistor is intact and
> so is the HOT, I have no voltage at either end of CR4118; I have 15V at
> U4101 pin 16. I have parts coming in today, all the caps around U4101,
> NTE580 (CR4118), TEA2261, etc. I want to be sure about what is causing
> the problem, does anyone have a troubleshooting flow chart on the SMPS
> or any tips on what I should be looking for.
>
> Thanks,
>
> David Lessard
> Mr_fixit@xxxxxxxxxxxx
>
>
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