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My LCD TV has started to have problems with the lamp. It has gotten to the point where the TV is on least than a min. before in goes black. The bulb is going out and I lose sound. It comes back on within 30 sec or so and repeats this cycle. Could I have a bulb Failing or is this a sign of something else. Thank You Curtis Burns

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  • cburns60 Sep 05, 2010

    Does this power problem have the control of the whole set? I never lose the the green power light on the front of the set. Forgot to mention tha tin the first message.

  • cburns60 Sep 05, 2010

    Thank you I will look into this as soon as I can. I hope this is a a simply overheating problem.

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LCD tv's don't have bulbs, they have CCFL tubes that don't burn they worn out very slowly.
Your problem has nothing to do with them, it's caused by a failing power source - the capacitors have started to age and dry and when they are heated by the normal functioning of the tv they start to conduct some electricity (instead of being isolators) ; that overstresses the source and triggers its protections - the tv stops - the current drops to nearly zero - the capacitors cool down - they become isolators again  - the source restarts, the capacitors heat up again and the cycle repeats.
The tv must be opened, all aged capacitors must be replaced and every other component in the power source checked for damage. I think this is a job for a pro.

Posted on Sep 05, 2010

  • Azrael SRL Sep 05, 2010

    Of course, the power source powers the entire tv. The fact that the power led stays the same signals that this isn't a full failure so the defect might be still small. and isolated on the lower tension lines so check also the connections to the mainboard and the radiators - the tv might be just overheating.

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