Westinghouse VR-3710 LCD TV generates high pitch noise (not from speaker)

SOURCE: westinghouse lcd 26 inch

I found that with my Westinghouse SK26H240S lcd tv. that when you turn down the blacklight feature you get a hum thru the audio. so I just turned the blacklight feature to the max and the problem went away, no more audio hum.

SOURCE: Westinghouse 32" LCD TV model SK-32H240S. When the

the high pitched noise is probably coming from a transformer in the unit, which leads me to believe that there's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for 5 mins, then try.

If you aren't tech savvy, this unit needs to go in for repair.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for different brand, but same issue) on youtube.
http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

SOURCE: I need a user manual

Click HERE to download required user manual copy.
Hope this will help.
Thanks.

SOURCE: I have a Westinghouse LTV 32w3

hi;
its sounds like a loose solder or high voltage leak inside your LTV
if you know how to open the back cover or technical experience to troubleshoot
you can check the power supply board and inverter board if it has a loose solder
you can visualize it in the back of the board.
also check the wires connected to inverter boards if it has a leak.
or shorts.

Wale Sarumi KomputerSolution

• 6993 Answers
• Posted on Nov 09, 2011

SOURCE: My Westinghouse TV LCD has no sound but has

Hello,

there are so many reasons why your TV won't bring out sound. You need to troubleshoot first, in order to get to the root of the problem, before a solution can be proffered.

First, connect a DVD player to the TV, observe if there is going to be sound. If there is still no sound after connecting the DVD player to the TV, proceed to the next step. "The reason why I asked you to connect a DVD player to the TV is to confirm if the problem is simply not from the audio cord connected to the TV."

Second, get an headset, connect it to the earphone jack of the TV and observe if there is going to be sound. If there is no sound, then it is glaring now that your TV is having a defective sound card/IC that's why it is not bring out any sound. (Note that connecting an headset to your TV is optional because not all TV's has a space for headset). "The reason why I asked you to connect an headset to the TV is to also confirm if problem is not from the TV speaker. Though TV speaker problems are rare but sometimes, the TV speaker might be defective or the speaker wires may have loosed contact or cut into two, due to one reason or the other. But if the headset doesn't bring out any sound from the TV, then it is not so."

If none of the above seems not to be the cause of the problem, then the above troubleshooting has confirmed that the TV has got a defective sound card/ic. The sound IC/card of the TV has to be replaced for the TV to bring out sound again.

To be honest with you, replacing or fixing the sound card/ic of your TV requires the ability or experience to do so.

Now, if you are convinced you can fix or replace this yourself, please reply so that i can help you further. And make sure you troubleshoot first, before getting back to me.

Regards.