Can you turn it on using the power switch on the TV since this one is known to have bad contact switch at the IR remote input jack on the back of the TV.
LG:
1) Test the remote:
The remote control puts out IR (InfraRed) signal that human eyes cannot see, to find out if the remote is sending out the signal or not you just point the remote at the digital camera's Lens (Digital Camera can detect IR), you should see flashing light on the camera's screen when any one of the remote button is pushed. If you do see the flashing on the camera, then the problem is in the TV IR receiver or the main logic board; more troubleshooting with scope will be needed to look at the signals.
Parts: www.shopjimmy.com
2) If the remote checked out OK, then look at the back of the TV for the "REMOTE INPUT", use a mini-phone plug and insert the plug into the remote input jack in and out a couple times to clean the switch contacts that select between the front IR receiver of the TV or the rear panel IR input jacks.
Post back what you find for further help.
Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Check the socket in next room , wherer as TV is required to be used with tester if the sockets r having the electricity. also if no tester is available. check the switch with any other applince i.e mobile charger etc if current is passing on. else you have to open the TV back lid with 4 nuts with a screw driver n switch the scrren n check with kavya stich with tester if its getting a current or not as well as the fuse besides it if a small line inside is intact or broken . in case its broken . get it replaced n the tv ll be workig , for further info issue.get the TV checked from the workshop as it can be checked n then the solution can be provided accordingly.
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