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Samsung HL50A650 Bulb and Ballast Troubleshooting

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Published on May 30, 2010

Had a bulb go out on May 10th 2010 on my Samsung DLP HL50A650. I knew the bulb was bad as there was no picture and the front 3 LED's on the TV were all blinking, indicating a need to replace the bulb. I replaced the bulb on May12th and everything was in working order. on May 29th the TV again indicated that the bulb was bad and needed to be replaced. Thinking there was something else causing the issue I read some posts on line and opened the cover to see what the problem was.

I noticed when I turned on the TV that a piece of circuitry on the ballast board was emitting light and making a small buzzing noise that coincides with the flicker of light from the circuit item. During this same time the bulb tries to light up and then stops when the circutiry piece stops buzzing and emitting light. This happens about 6 times and then the whole TV shuts off, blinking the 3 LED's on the front. I am not sure if this is normal operation and the bulb is just bador an indication that there is an issue with the ballast.

Any thoughts?

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