Question about Philips Magnavox 42MF521D/37 Television

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TV will not turn on and has a continues to keep

TV will not turn on and continues to keep clicking

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Power supply issues. I believe bad Caps or Capacitors, Can be fixed.
A good tech can either replace the bad capacitors or replace the problematic power supply.

Posted on Nov 19, 2009

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My LG TV KEEP CLICKING AND WONT TURN ON


Normally there are some capacitors in the power supply area of the circuit board that will be swelled up, on the tops of the capacitors they will be bulged out. it is a common problem. should work fine after replacing these capacitors.
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There is a problem with the power supply in your TV. The regulator switch is causing teh clicking sound you hear. In order to fix it, you will need to replace the power supply. This is done by taking off the back cover of the TV, locating the power supply which is usually a yellow board that will have many high voltage capicators on it and replacing it with a new one.

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First the main bd controls the "Turn on" sequences". When you press the Power on button the Main bd sends a "Turn on" signal to the Power supply. The clicking you hear is the Power on relay ativating. If the tv does not turn on and the relay keeps clicking then you might have a bad Main bd or there is s shorted board somewhere else in the set. The Power supply can also be bad. Have a trained Samsung tech troubleshoot the set.

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I had the same problem with my tv, same make and model. I first continuously turn on and off my tv manually until I could get some kind of picture. This procedure took maybe five minutes. I was able to get a fine picture and sound, as if it was brand new! Other things to keep in mind, try to eliminate dust build up as much as possible.. Hope this helps out...

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When you turn 'on' the tv...the tv continuously 'clicks'


The clicking noise is caused by the relays on the power supply board trying to power up the system. Your TV has detected a problem that's causing the power supply to shutdown. Someone knowledgeable in electronics can track down the problem. The SOURCE of the problem could be another board other the power supply.

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1 Answer

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Good Day,
There is no common problem with this TV for the problems you all described. So, I would recommend that you all call a Factory Authorized Service Center to come to your home and give a written estimate b4 any repair is performed.
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1 Answer

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You might have a relay with bad contacts OR a loose or burned loose resistor in the power supply circuit. Stargazer

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