Question about LG Televison & Video
Posted by Anonymous on
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Posted on Jan 02, 2017
As you said, if the TV starts with buttons, then the problem is either the remote or the IR sensor inside the TV. You can superficially test the remote using a digital camera. The camera will tell you if remote IR light is turning on, but it won't be able to tell you if the IR signal is out of frequency.
Unfortunately the only efficient way to find out if the remote is working is testing the TV with a different remote or testing the remote on a different TV. There is not even a way to test the IR sensor without using a replacement remote or a programmable remote. If remote and sensor work, the sensor will return 2.3V, if either one does not work there will be no signal. At the shop will test the TV using a programmable remote to find out if the IR sensor is working.
If there is a 3.5 mm jack socket tagged "remote in" at the back of your TV (there should be one), that can be checked with a tester like this to find out if the problem is IR sensor. You can try inserting and unplugging a mini jack several times with TV off to get rid of electrostatic charges on TV IR circuit.
If you have a programmable remote you can test the TV using a programmable remote, otherwise you will necessarily need to get a different remote.
If you need to replace the remote, before replacing the remote disconnect TV power cord and remove again the remote's batteries for five or ten minutes. That will reset both TV and remote. Try also inserting and unplugging a non-powered jack (eg. from headphones, or use the plug alone) several times. That will get rid on electrostatic charges in IR circuit.
If that does not work, get a replacement remote. It will be less expensive and more practical than doing anything else (e.g. buying a tester for remote-input or disassembling TV and replacing IR board straight away).
A replacement remote can be purchased from Amazon for less than £10: Replacement Remote or mkj40653802 by LG Electronics.
Posted on Aug 23, 2011
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