My tv has been functioning fine up until a couple of days ago. While watching it, the sound immediately went to static, only every channel went "staticy", except for channels 4 and 25. I have cable, so all the other 63 channels have a fuzzy sound. I went to the other 2 televisions I have in the other rooms, and they were fine. So I took one of them in the livingroom (where my "problem" tv was), and disconnected the cable/antannae, hooked it up to the other television, it worked fine. So I returned the connection back to the "problem" tv, and turned on my DVD player, and pressed play. The audio came out just fine. So what could possibly be the problem? I have excellent sound quality on channels 4, 25 and when I have my DVD, VCR or Sony Playstation hooked up. But not on any of my television stations, and it all happened suddenly without ever touching anything, and just all of the sudden. Please help me!!!
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Re: strange audio problems
That unit is a ctc203 chassis with an LA7612N for an audio IC for an amp. That and possibly a couple caps need to be tested/replaced to get your TV back up and running without the static sound in the audio.
It's a simple repair for a shop and not too expensive.
I would suggest taking the unit into the shop yourself to save a few bucks. And if you're not sure where to begin your research for a reputable shop might I suggest NESDA at:
which should help with finding a good tech in your area...
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Sounds like a mainboard/Digital board. Might be the panel too. Vizio makes substandard TVs and they tend to fail very easily. As much as I like to see devices repaired, this one may not be worth your hassle. Power problems caused by lightening can be the most damaging. You may even need both power and digital boards to repair it. I would buy boards from someone who will take them back in case the panel failed too.
I have a 2000 model RCA P52923 and I had the same problem occur a couple of days ago. The sound hasn't worked for a couple of years, but the TV is connected to an RCA surround sound to resolve that issue. Most recently, while watching TV, it began to start scanning channels by itself. I shut it off and unplugged it for a couple of days, but each time that I turn it on, it begins to immediately start scanning each channel. Neither the remote, nor the channel buttons on the set are able to stop the scanning, and neither of them will perform any functions, including turning the set on and off.
Any advice would be greatly appreciated.
I bought my Insignia 32" LCD in November 2007 - same problem. I figured out that if you press the "input" button on your remote select any of the other options "component 1, composite 1, etc.. that you're TV isn't on -then press "input" again and go back to the component that you're TV plays on - you'll have volume when you go back every time. I've gotten so used to doing it now that it's become habit. 9 times out of 10 I have to do it.
Probaby the stereo decoder IC went bad or a supply voltage to it is too low or noisy. If it has audio output jacks on the back of the TV, connect it to an external amplifier and see what that sounds like. If it is ok in stereo or mono mode then the amplifier in the TV is bad. This will prove that the stereo decoder is ok.