Question about Samsung Sp46k5hd / Sp50k6hd / Sp56k6hd / Hls4676 Projection Tv Lamp W/housing
Stand by/temp and lamp ligths are flashing
Posted by Anonymous on
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Posted on Jan 02, 2017
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.
Posted on May 07, 2010
two things to check here:
1. remove the lamp and examine it to make sure it is not shattered inside.
2. if the set had a high pitched or fan like noise before it failed, the color wheel needs to be looked at--I can tell you a easy way to do this.
Look at the lamp first--life span is 2000 hours.
I am here to help and the more you tell me the better I can help you.
SD TECH Steve
Posted on Jun 10, 2010
Testimonial: "Thanks. I will look at the lamp and the digital board."
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