My tv has 2 flashing lights on the front of the tv. i think my bulb is out but how do i know what the problem is for sure? the first light flashing is red and is the stand by light, the second light is the lamp light and it is green.
It sounds like you need to replace the lamp.
SOURCE: Immediately Shuts off with blinking light codes
I suggest doing a google search using the tv model # and brand.
I have learned myself that different big screen tvs seem to each have their own common problems. I have read before of power supply issues that cause what your describing.
SOURCE: TV won't stay on. Green & Red light timer-lamp (Green) stand by/temp (red) flash.
Most likely needs a new lamp. Easily done yourself.
SOURCE: Samsung HLP4674W - changed bulb - still no picture - lights flash
If the lamp has been replaced I would think the Lamp ballast would be most likliest followed by the color wheel and then the Digital board. You can get any part needed for your model at www.tvrepairworld.com just leave them a email they respond quickly.
SOURCE: Samsung DLS not working(with new lamp)
The grinding sound is most likely the color wheel. The lamp will not fire up if the computer senses the color wheel is not in motion or turning too slowly. It does this to protect the color wheel from being burned.
Something else you need to realize is the fans sometimes make some noise(especially the fan at the rear of the DMD Board).
The Ballast does not go bad that often and is misdiagnosed more times than it actually needs to be replaced. Sometimes the DMD Board is defective and won't send the color wheel the signal to start which in turn doesn't let the lamp turn on. I have read this misdiagnosed as a bad lamp, ballast, and color wheel multiple times. I currently have two of these in my shop at the moment and they were both verified by swapping known good DMD Boards.
There is some very good information available on this site but many times it isn't that simple of a repair. You need to get all the information and verify before buying parts. Most of the time it will pay for someone to have a reputable shop do a repair rather than buy parts that are not needed. I have had three people buy lamps in the last week, and two replace capacitors, only to give me a call and fix the problem correctly. All of these people got the repair tips from the internet.
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