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Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
Remove Mains Plug and press Standby switch from LED Panel for 30 sec.
Press Input & Ch Down Switch from LED panel and plug in and start LED
LED will start and "K" will appear on screen
Press Ch Down & Vol Down switch at same time
You will get 1/10 page on screen
Go to 9/10 page by pressing left & right button from remote
Select EEP and press Ok button from remote
After 30Sec remove main plug and restart LED.
Remove Mains Plug and press Standby switch from LED Panel for 30 sec. Press Input & Ch Down Switch from LED panel and plug in and start LED LED will start and "K" will appear on screen Press Ch Down & Vol Down switch at same time You will get 1/10 page on screen Go to 9/10 page by pressing left & right button from remote Select EEP and press Ok button from remote After 30Sec remove main plug and restart LED.
It's called a "momentary switch, normally closed". This is sometimes abbreviated Mom Switch, NC. But I have never seen one with a pull chain before. Maybe you can find one with a toggle that you can attach a chain to.
What brand TV is this? Sounds like the power board may be out. You could check for power at the power board with a Multimeter. You need to have power run to the TV but TV not powered on. Board usually has a led green or red light to indicate power to the board. Sometimes this light can be seen without taking the cover off, sometimes you may have to remove cover to see power board and definitely to test with multimeter. Hope this helps. J
I had the same problem with my 2004 TL, and it was the brake light switch. It is very easy to replace. (10 min) I ordered one from Rockauto.com for only $6.95. To replace: Remove the black cover under the steering wheel, down by the fuses (held in place by rubber pins and clips - no screws) Locate the switch on the arm of the brake pedal. Unplug the switch, twist the old switch out and install the new one - it's simple!