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On A magnavox ct270mw8 A shuts itself down after 3 secs

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You have a bad ceramic capacitor in the high voltage section of your TV. They are usually in parallel with other identical caps located beside a transformer. Notice that your TV has three of these circuits for each color gun. The best way to check these capacitors is to pull one leg of the caps out of the circuit board then test them with a Fluke Digital MM. Set your meter to capacitance and make sure that is on auto range. If one of these caps has a very low farad reading than all the rest this is your problem cap. What is happening is that when this cap is trying to build up to a certain voltage it cant. This is in turn causes a system overload and then your TV shuts down

Posted on Sep 02, 2010


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