Question about Sharp 20R-S100 20" TV

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No sound and Picture okey

I have change the power IC but still no sound? What else are the part to be checkor replace?

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Speaker. see if it is open. by the way what power ic is that? is that the audio output ic?

Posted on Jan 15, 2007

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Posted on Jan 02, 2017

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Lg 42le4500 tv when first turned on its okey after 2 minutes no picture black screen but sound ok, turn it off and back on againdoes the same


I would bet on some component(s) have become thermo sensitive. Most of the time capacitors can do this type of thing. Most likely the defective caps could be in the power supply.

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1 Answer

No sound or picture


first check  if it is in AV  mode.  if true then change it to TV mode.  problem will solve ...

  In rare cases  inside the TV  board  chroma ic may gone if there are  2 ic's.  
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thank u

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1 Answer

No picture just sound


TURN UP THE A1S ON THE TRANSFORMER IF YOU SEE A VERTICAL LINE ACROSS THE SCREEN ITS A FAULTY FRAME IC CHECK FOR DRY JOINTS AT FRAME IC, REPLACE WITH A NEW IC IF NO OTHER FAULTS ARE VISIBLE.

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