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My RCA Dimensia TV from 1987 started to do this strange thing where the screen will turn off and on by itself while a loud clicking noise would come from the back of the set. This sort of thing has happened before, but it would usually resolve itself in a few minutes. It has been a week.

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From original owners manual
check sleep timer or alarm time functions
electronic protection circuit may have been activated because of a power surge

Posted on Feb 18, 2010

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A model number would be helpful to answer this but:

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Let me know model number which is not indicated on this question here.

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I have owned a Sony Grand Wega for about 3 years now and for the past few months the TV has been making a very loud noise. I thought the noise was the fan but came to find out it was not the fan and was...


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The loud pop you heard was a filter capacitor. The problem now is the power supply is shot, or should I say the capacitor that is connected to that voltage output is blown. You will have to replace it with a new one. I would suggest just for your curiosity, unplug the TV, take the lower panel off (you will need a star head driver to do this) and look at the power supply board (the board on you left side) look towards the middle of the board and you will see a heat sink in the middle of that heat sink you should see a capacitor (or the remains of one). its value is 2200uf 16V (I believe that this is the one that has gone bad), you should also look for others that may have blown also. I would also suggest that you have a qualified TV repair person come to your place and work on this for you, due to the nature of this section of your TV. 
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