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I inherited an LG20LS7D - about 3 years old now, and suddenly NO picture - nothing,nada. Had only used it for dvd hookup viewing - have sound but just black screen....is it WORTH repairing?

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  • sadleraw May 24, 2009

    Thanks for your advice.....looks like we'll be taking it in for hopeful repairs!

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Hi,

Is the audio coming from the TV's internal speakers, or from an external sound system? If the power supply caps or secondary rectifier are bad, or if the high voltage splitter has shorted inside, the set will not run and there will be no picture or sound from the TV. If the picture is completely black but the TV still has audio, press the menu button and see if the menu comes up on the screen. If the menu is there, check your cables on the back of the TV. If you are using a cable or satellite box, the box could be bad or the video wire could be bad or loose. If you do not get the on-screen menu, then I would guess that the solder joint next to the flyback transformer that sends filament (heater) voltage up to the picture tubes has cracked, or the low value resistor in the heater circuit has opened up. If that is the case, have the set serviced by a qualified tech familiar with this series.

It's worth a repair if its a fault with flyback transformer.

I hope it would have helped you.

Thanks for using Fixya.

Do rate the solution as "Fixya", if 100% satisfied.

Posted on May 24, 2009

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