I'm going to try and help you. Can you tell me if you have gone to the tv menu and looked at the audio section to ensure that the speakers are "on"? Also, can you tell me if the tv is run through a stereo or other audio device or do you run it as is with no other component? Once I hear from you, we can take it from there.
By any chance did you try to adjust the volume by using the control panel on the TV instead of using the remote? I'm still researching but wanted to find out if you've done that. I'm sure you are not happy about this situation. I have a rear projection TV myself and I don't know what I'd do if it went down.
Another question and it's going to sound bizarre...were you watching Spike TV or the Speed channel when your sound went out? Also, do you have GuidePlus (+) on your tv?
Sorry for the delay. We had to go to family's house for the holiday.
OK, that's good information. The reason I asked about what you were watching is that some folks who own RCA projection tvs have had problems in watching Spike and the Speed channel through their cable system due to some kind of a spike. Also, do you have GuidePlus on your remote? I'll get back to you as soon as I hear back. Hope you had a good holiday today.
Before you do the "accept" , I'd like to do a little more legwork based on the info you just provided. Hang tight and let me see what is out there. What you don't want to have happen is only a temporary fix with the RCA cable and have the sound get blasted again. I'll be checking this out and will get back to you later this afternoon. Great to hear that you had a good holiday. We went to my Mom's and Dad's too. Thanks for the well wishes. OK, I'll get back to you with my findings.
Well, I've found nothing concrete for your particular model of RCA. However, I did find a very very interesting discussion thread (one that includes an RCA rep) that leads me to believe that the problem is related to the cable service and interference with RCA TVs in particular. Although your TV model is not mentioned, I can't help but wonder if it isn't universal among all RCA TVs.
That's why I'm thinking that it might happen again. If you can remember that particular channel you were watching when the sound took a dive, I would stay away from it just to be on the safe side. Have a great evening.