Question about Samsung SPN4235 42 in. Plasma HDTV

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My tv came on then all the sudden it went off it has no power

We checked the fuse box no fuse was blown the cable box comes on we have sound through the cable box but the tv wont come on?

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You possible have a bad power supply in your tv. check mosphetts in tv also fuse if you are technicaly inclind

Posted on Feb 07, 2009

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Was watching my samsung LN55C630 TV and all of a sudden it just went dead. nlo picture and no sound,also the power light went out thats normally on when the tv is off.


Check the circuit breaker first for power to the outlet it is plugged into. If it is in a power strip then make sure that the reset is hit on that. I sounds like you had a line surge for some reason. If all else fails there is a fuse on the power board in the TV. Check to see if that is blown. If not check for black burn marks on the power supply board. Could have blown that altogether.

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It's obvious that the power supply failed. The most common parts in a power supply are a thermistor or a voltage rectifier, possibly even a voltage regulator. diodes or resistors can act as fuses too. A ringing sound can come from a fixed coil that isn't kept still with enough epoxy. Hope this helps.

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It may be a fuse. But something else may have blown the fuse. I would check the circuity of the power supply.

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Duraing a power outage my tv went off and now will not come back on no power to it at all. everything is ok cable box is on , stero is on.Is ther a reset button for the tv?


Is your TV's indicator light ON? Did you try turning it on from the remote as well as from the TV's control panel?
If your TV's indicator light doesn't come ON, it could be that the fuse inside has blown due to the power fluctuations. If indicator is ON, your TV's internal power supply seems to be fine, you may have to take it to your technician.

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Maybe faulty power switch or its blown a fuse or the powwer supply inside the TV is kaput.
If its out of warranty get in touch with a reputable TV mechanic and ask them to come and repair it. It might be good to get a ballpark figure on how much it's going to cost.
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Check the power cable and test a different power outlet.

If you are in UK also check the fuse inside the TV power plug.

If you do not find anything wrong , then either the fuse on power board, or one of the power board capacitors had blown, and the TV must be disassembled and tested to fix the problem.

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If the power spike came in through the cable, I would suspect something in the tuning circuits -- unless you have the set connected to a cable box, in which case I would try the box on another TV first. If the problem is in the TV which was made by Symphonic-Funai by the way, I would check with my homeowners insurance if you can file a claim before I spent any money on it.

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