Question about Samsung Televison & Video
What has happened: a big part of the tv has failed - usually in this model is the T-Con board - and that part has started to act like a short, drawing huge amounts of current and preventing the rest of the tv's components to function correctly. This in turn has triggered the protection system of the power source which has forced it to shut down. If, despite the obvious bad state of the tv, you have attempted to start it the protection system gets reseted and disabled - this allows the power source to start functioning; that in turn causes the T-Con board to get powered and it absorbs so much current that the voltage drops so low that the power source can't operate no more so it just shuts down; that cuts the power to the T-Con board and the current to it drops = the voltage starts to raise = the power source starts to work again and the cycle begins again - this is the clicking you hear. Eventually the protection system kicks in and the power source is shut down for good.
This abnormal functioning massively overstressed the still functioning parts of the tv - every time you have tried to start it the damage got bigger and the protection system had a harder job to activate and protect the tv. Stop doing that, in fact unplug the tv from the wall immediately.
To identify the faulty board with certainty the tv must be opened and the voltages on the power source checked - the one that is close to 0 will point to it. This is a very skilled job that should be left to someone with experience. Call a repairman and be prepared to pay around $600.
Posted on Nov 02, 2010
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Posted on Jan 02, 2017
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