47LG50 UG flat panel tv acting weird. Volume increases, channel changes, TV turns on automatically. Any suggestions?

please check touch key board i think it is defect

thanks lal electronics

you can get one from www.tvrepairworld.com

MIGHT WORK IF YOU:
Turn off tv with remote, that is standby, then turn off tv with switch or unplug from wall. Wait a few minutes until led lights go off on tv. plug tv back in. try pushing vt on remote and power button on tv at same time.
If this doesn't work try contacting a local retailer, they always have a list of codes for their salesmen.

This can be due to moisture build up or dirt accumulating with a static charge to induce voltage and so change the customer control panel switchings.
You can try with a good cleaning of the board and panels. Make sure to dry if moisture is seen. Also check for static conducion of high voltage to the control panel that can induce the inputs to work erratic.
if not check the processor section- processor damage- and the board for a possible weakness.

The volume (+) button on the TV is stuck or soiled if the volume automatically increases when the TV is turned on. To find out:

1. Turn off the TV.
2. Press and hold the volume (-) button on the TV then turn it on.
3. If the volume doesn't automatically increase, you have a stuck button.
4. If it does increase, you have a faulty key control board.
5. In either case, you have to replace the key control board.

To find it out further:
Warning: Beware of electric shock.Please do not proceed if you do not have the skill to do the following.

1. Unplug the TV.
2. Let it stand for 15 minutes to allow voltages to drain completely to avoid the risk of electric shock.
3. Remove the screws securing the TV's back cover and pull it off.
4. Disconnect the cable that runs from the main board to the control key board.
5. Turn the TV on using the remote.
   
6. In this manner you can use the remote control to run the TV while waiting for the control key replacement board.

To do a hard reset of the TV, unplug it and let it sit for 2 hours or long enough to completely drain the internal voltages.

I would suggest returning it for exchange.

You have ONE of two possibilities....on the Front panel buttons, you MIGHT have a stuck button or leaky button....

I suspect that if ALL it does is change channels...it would be a channel UP or DOWN button stuck....yes, it can fire up the tv too....But it will dedicate itself to doing only ONE function.

IF you have multiple operations, like changing channels, menu appearing, volume changing....then the MOST likely problem is actually the microprocessor causing the problem....BUT it is STILL possible to have SEVERAL buttons stuck....rare, but possible.

And unfortunately unplugging it won't even help in any of these possibilities....

You have to start with pressing each and every button one at a time and see if the problem stops afterwards....

IF it doesn't, then the next step is to measure the resistance across each button....they should read Infinite ohms.

If any measure lower, the button should be removed and see if the TV acts normally...

IF the buttons are located on a separate board with a plug that can be disconnected, you can just disconnect that while it's acting up and see if the problem disappears.....

If it still misbehaves after this, you NEED to get it to a TV tech for further analysis with a scope.....

micro switches of this tv are faulty change all

the problem can be fixed by replacing the digital main board. if its under warrenty take it in and have it replaced for you.

plug your cable connection to a vcr "in" then run a seperate cable cord from the vcr "out" to your television (which should be on channel 3 or 4) depending on your vcr setting and use the vcr to control the channel so when your westinghouse freezes and becomes unresponsive you could still change the channel and so on through your vcr and tv acts like a monitor works for me. N.B be sure to set the volume and so on before it freezes which could be like a 1min window from turning your tv on
P.S ......................Cardinez