My lamp went out on my television LG DLP RU-52SZ51D. I recently replaced the bulb and the television worked fine for a couple of days. However, there was a loud humming noise coming from the back. After a few days, my television will not come back on it will blink one yellow light and then two red lights will blink and the television will no turn on. I opened the lamp back up to find that the bulb is still good. Does anyone know what I need to do.
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Check to make sure that the lamp housing is fully seated in the compartment, and that the door is properly closed and secured. There's a microswitch on the lamp access door that will shut the lamp off if the door isn't in place properly. That switch itself can be bad and can cause your problem.
If the second light is blinking to orange or red, that is usually the lamp indicator light on an LG DLP tv. That indicates your bulb needs replaced, or something surrounding the bulb has failed (like the cooling fan for the bulb for example) IF you have a spare bulb handy, I'd replace the bulb, keeping in mind if you touch any part of a new bulb with your bare hands, you just cut the life of the bulb by more then half.
On my unit there's a panel on the lower right hand side, remove the 2 screws with a screw driver. Inside you should see a compartment that is metal and has a thin metal handle. Remove the Black screw on the top left hand side. Then pull the unit out with the handle. Inside the unit holds the bulb, just replace and go through these steps in reverse to place back together.