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My LG 42" KCD HDTV will not come on. When you push the on button on the back of the tv, the red light comes on and stays on. It does not power to a blue light, nor does any sound or picture come on the tv. There is no clicking noises, it's completely silent with only the red light. The red light use to only come on when the tv was off...please help. We bought this tv Feb 2010.
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Hi Your tv set is stuck in the standby mode as a components went shortcircuit in one of the power supply rails and should be serviced by qualified personnel.
My Samsung started doing that and it got worst and worst. Searched the web and find answer. It was the high voltage circuit. All TVs now are like computer and it check for 390 to 400 volts and if it is below, the TV will not turn on. Good thing the Samsung has only one capacitor showing the high voltage circuit. Measure the voltage was 381 volts. The capacitor was rated at 100 uf at 450 volts. From some old TV and power supply, got two capacitors rated 150 uf and 220 uf both at 400 volts. Had to connect them in parallel and took out the old capacitor. Now, my TV works fine.
your main board has gone bad. Can be fixed, in my shop it would cost about $250. It is a real shame on the industry that these things last about 2 years or less. Hope you held on to your old crt style tv.
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