I was minding my own business watching the TV. The sound suddenly changed to static, much like if the channel had been changed to a completely static picture channel. The picture still comes in fine, but all the TV channels are giving the static sound. It's happenning on the regular local channels and channel 3 for the VCR/satellite setting so that I get the static sound on any satellite channel or when I try playing a VCR tape. However, the sound works fine for the DVD setting, video input 1.
I've tried checking all the connections and menu audio setting, but still can't find the problem. Any ideas? If there is some kind of electronic problem, why would the speakers be fine with the DVD but nothing else?
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Re: White Noise Sound
Your problem is somewhere between the tuner and video detector circuit.
The signal entering your TV carries: video,red color,and blue color as well as sychronizing pulses for color and horizontal and vertical deflection ( actually vertical sync. is derived from horizontal sync.) along with burst pulses to synchronize the color. After all these, the sound is an fm signal entwined with a pilot signal for stereo audio. WHAT a mess!
After the audio passes through all this, it is detected and sent to the audio processor.
If any frequency has drifted away from it's value then you loose the sound.
SO... your problem could be in any of the tuned circuits or in the audio processor IC (chip). Any component changing value could creat this problem. Most likely the audio processor IC. You'd need to have the set checked out by a tech to find your problem.
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Jan 7, 2010 - 26 posts - 15 authors
Hi, I have a Samsung LN40A550 LCD TV which I have had for just over a year. ... I was watching TV yesterday and all of a sudden the picture went all. ... started makinga very high pitched buzzing sound with no picuture coming on. We did have a bunch of green vertical lines, but now just a black screen.
Sounds like T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
had this problem for a while only just found the cause, its either your tuner flipped out which means you just neded to retune the tv and it should be fixed if not that there was this setting i found still not sure what it is or means but you could select these letters i think there was S, BG and some other ones but i changed it to the top one which was BG and it fixed the static sound with the clear picture problem just stuff around with the channel settings and see if you have that setting hope that helped
try changing the channel you outputing to. go to your tv1 location hit the menu button and choose number 6 system setup then number 1 instalation then number 5 modulator setup then change tv2's channel to like 65 then select done go to your tv2 put on 65 and see if this helps issue
Check the aerial cable, ensure it is well plugged in and getting signal.
If you are using a receiver box, check cables to TV and receiver (freeview, sat, cable etc.), try setting channels on receiver again, if it does not work but you get static, then either the cables or receiver are defective.
Test the TV on standalone , connecting it to an external antenna. Tune again the channels, and save the preset. If still no signal then the antenna socket on the TV may be defective.
Try using the TV with a DVD.
If you can watch DVDs, and TV is not keeping channels preset, and you tried all the above, at this point htere may be a fault in the tuner card inside tv.
Call the phone number listed on tv user manual to get support, and eventually repair it.
It may be that the set is set for alt sound. go to the menu and set the audio to stereo. If the audio is set wrong it thinks you are set for spanish and if the broadcast is not in an alt language there will be no sound.