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 when=0D > the TV is turned on. Video is good from both the tuner and video-in (no=0D > 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 processor)=0D > and LA7765 (stereo processor), I didn't touch the TDA7263(Audio AMP). I=0D > 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 > EEPROM=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 > > > >