[TechAssist] Re: RCA CTC169 35" Audio hum in standby, thumps@ turn on
- From: "Webster's TV" <webstertv@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 28 Apr 2005 19:02:22 -0500
Phil,
What about C4108(47m-50v) in base circuit of Q4101(chopper output). Have had
this cap cause thumping or popping in speakers when the unit is off.
Dan Webster
Webster's TV
Shullsburg, Wi.
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, April 28, 2005 8:55 AM
Subject: [TechAssist] RCA CTC169 35" Audio hum in standby, thumps@ turn on
> Sorry, no model. Assisting another shop. He says with this 35" RCA
> CTC169 chassis, when he just plugs it in, he hears a low hum thru the
> speakers. When he powers the set up, he hears a thump (or
> thumps).Otherwise all works OK. I said to look on the upright audio
> output board ( the one with the outputs and jacks) and locate the small
> lytic caps near the front edge, next to the audio out IC's heat sink.
> These caps sually leak. Usually are about 47mfd@16V. Am I overlooking
> anything else,or any other fixes for this hum/thump symptom?
> Thanks,
> Phil
>
> --
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
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