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I have sharp model 21v-s100,shut down after 20 minutes and back to standby.

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5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: Sharp Model 25N-S100 - black triangle on screen

turn off cc/closed caption

Posted on May 03, 2008

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  • 1 Answer

SOURCE: I have a Sharp 21V-FP85S:

I replaced the the power regulator IC and the TV is now OK!

Posted on May 26, 2009

Kuwagata
  • 181 Answers

SOURCE: I turn the tv on and after a few seconds it shuts

Possibly the main Power Regulator is damaged!!!

Open the case, then look for anything that burned out, replace it!!!

If still won't start, you need a multimeter, soldering iron, try locate output diode on power regulator board, then measure the voltages, it has 3-4 type of voltages;
first diode it should around 115V-130 V DC.
Second diode it should around 24 V DC.
Third diode it should around 11-16 V DC.
Fourth ( if exist), check diode and should around 5 V DC.

The problems usually start on second diode, if persist, follow the circuit board.

Posted on Oct 18, 2009

technolust
  • 340 Answers

SOURCE: primo sharp 21v-L70m model the

These sets are quite outdated, there are fewer and fewer repair shops out there for them.
The problem is most likely the power supply (internal), this can be repaired quite simply if you know what to look for. Other problems may or may not include a blown IC, fuse, lamp, or the tube itself.
The cheapest option you've got is to buy a new TV I'm afraid.

Posted on May 11, 2011

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