Question about Sharp 32F640 32" TV

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Tuner problem The input on the TV will change on it's own without me using the remote or changing it in any other way. It will change from input 1 to 2 to 3 and so on. I can't control the input from changing, and it's impossible to watch tv.

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Re: Tuner problem

Your problem is in the system control section of your tv. please check 1 supply to systemcontrol ic or loose contact. 2 supply or loose contact in tunning ckt of tuner (33v zener line) 3 aft ckt loose or defrctive. 4 loose button on remote &front panel of tv. 5 memory ic. 6 system contro ic. I think this will help. good luck . 4 system

Posted on Sep 29, 2007

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How do we scan/program in local tv channels. We bought an external antenna, but get no picture. Typically, there is a protocol for scanning channels into the set. Model is Sansui TVS2746B, and the set was...

Okay, does this tv have a built in DIGITAL tuner? Most tv's only have an analog tuner. You can tell the difference while you are changing the channels. If the channel indicates 2.1 or 2.2 and so forth, it is on a digital channel mode. If you change the channel and it indicated 2, 3, 4, etc. it is analog. If it has digital capability change the input until you see 2.1, 3.4 etc. If you cycle through all the inputs on the tv like, input 1 (TV) input 2(DVD) input 3(HDMI) and so forth and you never see the digital channel you most likely do not have a digital tuner. You will need to purchase a digital converter which will convert it to analog and you can watch it by placing you tv on analog channel 3 just like the old vcr's. Hope this helps and please don't forget to rate this solution.

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I have a Toshiba 24af42 with no remote. I am trying to change the input, but without a remote I cannot figure out how to change it. I have tried a universal remote which works for other functions, but not...

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good day , what button can you see infront of your TV screen?

Not familiar with this model but if you'll manage to locate a button marked as "TV/AV" or "AV" press this button until it the display switch to A/V mode (audio/video). Or if this is a really old model, from Tuner mode or channel model. set the channel station to 1 then press the " - channel " button and see if it will change from tuner mode to A/V mode


Jan 31, 2009 | Toshiba 32A33 32" TV

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How Do I Get a DVD to Work with This TV?

Make sure to switch the TV's tuner mode to Video or Aux mode.
You can change the mode using the original TV remote or directly from the TV's control panel.

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That works great except I can get the tuner to program any channels above channel47. Is this a limitation of this older model TV yes there is limitation in old tv. is there some setting I can change in order to get more channels using the tv tuner? in INDIA what we do is put a remote control ckt which gives us about 250 channels. of course we replace tuner also called hyper tuner along with remote ckt or replace whole kit which are cheaply available.& serves the purpose. hope this will help

Oct 03, 2007 | Standard (CRT) Televisions

1 Answer

Tuner problem

your problem is in the system control section of your tv. please check 1 supply to systemcontrol ic or loose contact. 2 supply or loose contact in tunning ckt of tuner (33v zener line) 3 aft ckt loose or defrctive. 4 loose button on remote &front panel of tv. 5 memory ic. 6 system contro ic. 7 check for loose contact in tuner. I think this will help. good luck .

Sep 28, 2007 | Standard (CRT) Televisions

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