My Toshiba is about 3 years old with no problems up until now. I have a DVR cable box with it and when I turn on the cable box, it's fine, but when I turn on the TV, it's fuzzy. This hasn't happened before. I checked all of the plugs and they were ok. I restarted the DVR box but that didn't work. What should I do?
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That set has an aspect ratio of 4:3. The problem is that what you are sending to it is 16:9 So you are sending an hd signal to a non HD television. The tuner is NTSC which is not HD. Theres not much that you can do about this.
Your TVs tuner tuned a little off frequency. It could be as simple as having cable box on where you have good picture but fuzzy sound, use the TVs remote to change the channel and then change it back to proper channel. If that doesn't fix you may have wrong tuning type selected in channel set up menu.
It soulds as of your solder joints are getting old and starting to crack. If the screen goes completely black then I would resolder all the major solder joints on the main PC board, and if you mean that the screen goes to all snow (as if the cable went out) then I would also pull the tuner and resolder the joints inside it too. If you do not have experience soldering on small PC boards then allow a qualified tech to handle it for you. The fact that it works sometimes means that all major components are fine and the repair shouldnt cost too much.
I wonder, does it do this on all programs ?
I notice the same thing on my cable box when some of the wide screen movies are shown.
I know of no adjustment on a Sony that would cause this effect.
Right, but the problem is more likely the tuner unit-which the coaxial is hooked up to. If it was strictly the coax, when you wiggled the cable around, the image would probably come back fine. Youll have to get a tuner and solder out the old one, the solder in the new one. The tuner for your model is part QAU0305-001 found here: http://www.jvcservice.com/service/JMdlPrtXrf.asp?PgReq=DspDta&MdlNbr=AV-32432
Be aware that the problem could be as simple as a diode or cap...until it can be tested we don't know for sure. techman would probably know more about this model than I would.