[tvservice] Re: RCA ctc177bh2 no sound..

  • From: "Hoyt's TV" <hoytstv@xxxxxxxxxxx>
  • To: <tvservice@xxxxxxxxxxxxx>
  • Date: Thu, 4 Nov 2004 17:09:49 -0500

There is a mute signal from the main micro I think, that mutes the sound
when changing channels. I have found that bad. It is NOT the same mute
circuit as the one that is used when you push the mute button. There is a
resistor you can remove to disable it. I was told to do that by one of RCAs
$2/min. techs and then a year or two later they denied that they ever
recommended doing it. Some guys say that will destroy the speaker eventually
but I have not seen it happen.

Russ Hoyt
Hoyt's TV
Exeter, NH

----- Original Message ----- 
From: "Gilbert Kelley" <gjkelley@xxxxxxxxxxxx>
To: <tvservice@xxxxxxxxxxxxx>
Sent: Thursday, November 04, 2004 4:15 PM
Subject: [tvservice] Re: RCA ctc177bh2 no sound..

> Content-Type: Text/Plain;
>   charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
> First I would suspect the EEPROM.....Second I would recheck all my ground
> connections around the tuner shield....If you turn the sound all the way =
> up
> do you get low audio?=0D
> =0D
> Hope this helps some....let me know what you find.=0D
> =0D
> Gilbert =0D
> -------Original Message-------=0D
>  =0D
> From: Sam Barnum=0D
> Date: 11/04/04 14:41:22=0D
> To: tvservice@xxxxxxxxxxxxx=0D
> Subject: [tvservice] RCA ctc177bh2 no sound..=0D
>  =0D
> Hi all,=0D
>     I have an RCA CTC177BH2 with no sound, not even a click or hiss
> the TV is turned on.  Video is good from both the tuner and video-in
> sound out with audio-in from VCR either.  I had the TV to fix a cold=0D
> solder joint under the RF shield.  While I had the soldering iron in my=0D
> hand I also reflowed a number of joints on the LA7610 (signal
> and LA7765 (stereo processor), I didn't touch the TDA7263(Audio AMP).
> don't know if the sound was working before hand.  However the I have=0D
> confirmed that the speakers do work.   Any thought on where I should=0D
> look first?=0D
>  =0D
> LA7610=0D
> LA7765=0D
> TDA7263=0D
> Other??=0D
>  =0D
> Does anyone have a data sheet for the LA7610?=0D
>  =0D
> Thanks, Sam=0D
>  =0D
>  =0D
> =20
> -- Binary/unsupported file stripped by Ecartis --
> -- Type: image/gif
> -- File: IMSTP.gif
> -- Binary/unsupported file stripped by Ecartis --
> -- Type: Image/jpeg
> -- File: BackGrnd.jpg

Other related posts: