[TechAssist] Re: RCA Proscan PS27115, Chassis CTC197BC. Intermittent loss of audio, just a pop sound when channels change?

From: "pete" <tvtech@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Tue, 1 Nov 2005 20:47:51 -0500

try disconnecting the mute pin on the output ic see what happens

good luck

Pete
Perdomo Tv Inc Since 1972
Miami.Fl
----- Original Message ----- 
From: "Robinson Electronics" <RobinsonElectronics@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, October 31, 2005 11:43 AM
Subject: [TechAssist] RCA Proscan PS27115, Chassis CTC197BC. Intermittent 
loss of audio, just a pop sound when channels change?


> Can any of you Techs. when with some info on this problem? Are there any 
> cure from Thomson on this?
> The customer said he was watching TV and the audio just quit, but would 
> make a pop sound when the channels were changed.
> I checked the set out, plugged it in and the sound is great, no problem 
> found.
> I changed out some caps in the audion circuit in case of low esr, checked 
> ok though:
> C11601, 11604, 11611, 11623, 11628, 11907.
> I checked the audio output TDA7499, not getting hot, checks ok.
> Played for about a hour, called the customer to pick up.
> The customer said it played good for about 2.5 hrs. then quit after a 
> commercail came on, now just a pop sound when channels change. looks like 
> after unplugged for a while, it resets and the sound is good.
> I saw some notes indicating Q11900 "mute xstr" as a common audio problem!
>
> Has anyone seen this, found a cause or cure for it?
> Can anyone help us with this? Any info appreciated.
> Thanks.         David.
>
> Robinson Electronics
> 1075 Sweeten Creek Road #51
> Asheville, NC 28803-1757
> Ph./Fax. 828  274-3787
> Toll Free. 1-888 ROBELECT
> www.robinsonelectronics.com
> www.robelect.com
> Mailto: RobinsonElectronics@xxxxxxxxxxx
>
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[TechAssist] Re: RCA Proscan PS27115, Chassis CTC197BC. Intermittent loss of audio, just a pop sound when channels change?

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