Was getting occassional white lines along with a brief static sound on all cable channels above 48. Then the channels above 48 died. Channels below 48 all still worked fine until the next day. Now there is nothing but static on all channels but I'm able to bring up the menu. My TV is a 32" Toshiba standard TV model # CF32F50
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Re: Static on all cable channels
The tuner is questionable The problem lies inside the isolation box. Ask a repairman to open this isolation box and resolder the small board. There are two small resistors that need resoldered. This also has the rf connector on it. And you may have him resolder the tuner if this does not fix it. Have him inspect any and all grounds on the main board as well. Good Luck
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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.
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.
Check and make sure you have the composite cable (5 color cable) connected correctly and you have the NTSC/PAL set to NTSC (north american if applies) If you have a audio out (r/wh) cable into the RGB inputs on the TV, itll knock out a color or chroma channel and itll look strange.
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.
if there is a cable box hooked up to this vcr, the vcr needs to stay on channel 3 to record.the output of the vcr either hooks up to the tv from the coax out , or from one of the other possible outputs such as rca cables [red, white, yellow] to one of the tv's aux/video/line in or source inputs.
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.