Question about Sharp 32C-240 32" TV
The clicking is caused by the relay that supplies AC to the main power supply.
It disconnects repeatedly because there is a fault on the output of the main supply or within the supply itself. If this action didn't happen, it could cause a fire or trip your household breaker.
Since this is a CRT type set, I would be checking for a shorted horizontal output transistor or a failed fly-back transformer with which this transistor works to produce high voltage for the CRT and the signal that moves the sweep back and forth across the width of the screen.
The transistor replacement with labor wouldn't be terribly costly if done by an honest tech but if the fly-back transformer has failed, it may not be available any more and would in any case cost $60-100 US plus labor. These two parts will often fail nearly simultaneously as the result of one of them going first, then damaging the other.
Posted on Nov 12, 2010
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Posted on Jan 02, 2017
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