Question about Westinghouse LTV-19W3 19 in. LCD Television

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Takes tv 10 minutes to power on

After tv powers on it works fine!

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  • Westinghouse Master
  • 933 Answers

Check the capacitors in the power supply

Posted on Jan 11, 2013

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Posted on Jan 02, 2017

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Converter only works properly after it has been left on for about 20 minutes


In my years as an Electronic Technician I have had two simular situtions happen to me. Both were in TV's but the results was the same, they had to 'warm up'. Then they played fine until they cooled off. I finally discovered that in the power supply I had a ceramic resistor that should have been about 2 ohm had changed to Mega ohm and was not letting power through fast enough to start quickly. Once it got the caps built up it worked fine. The other was also in the PS and it was a large cap that was just slow to take a charge. Don't know that either of these fit your situation but that is the only two times I have experienced a problem of that nature

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RCA D52W20 TV powers on fine, then shuts itself off after 5 - 10 minutes. After 20-30 minutes, I can turn tv back on, but then shuts off again in 5 minutes.


it looks like the problem is in the 16v line..try to take it apart..and there's gonna be a 2200mf cap leaky.
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1 Answer

Sylvania 6842THG won't turn on. the tv red light displays when you push the power button you hear a click and then 5 - 10 seconds it goes back off


I have been having the same issue. I unplug the TV for 10 minutes and it usually works fine. I moves all of my A/V plugs to a single power strip and that helped a lot. Since then, the TV went into protection mode only once in 2 weeks. Next, I will use a power strip that includes the cable protection.

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1 Answer

TV shuts off after 15/20 mins!!


 Dear customer,
       It could be the transformer. The problem with protection circuit shut downs is you don't know which section is causing the trouble.  The protection system is really just a current sampler that when it detects an excessive current it opens up the power relay and shuts the power off.  And, as you indicated, unplugging for a few minutes will reset the protection detector.

But, there are about 8 or 10 sections within the tv and you don't know which section has the excessive current.   Most common causes are power supply, high voltage supply, deflection amplifiers or audio amplifier.  It usually takes a tech a few minutes to take some voltages and other checks to zero in on the culprit. Once the section is known then that tech can troubleshoot it for the bad component or shorted condition.
               Usually  it works fine until there is a signal coming in through the coaxial port. that is wen the tv gets switched off. Its a possibilty. Checking the  power supply unit of ur tv and see if it has malfunctioned and  check your power cable for starters.. 
Plz rate this solution.. thank you..

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1 Answer

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mi tv turns on but only in color blue,next tv turn off red light apear one time and second time flash twice,whit mi remote control power on tv turs on ,then whit mi remote control send change chanes or any other funcion the tv turns off,letme now if you solve yor problem ,and i apreciate if you have some tips for me,thank.

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2 Answers

Incorrect power management


Dear u have a problem with VGA or Monitor...U should try to put new vga in you'r mother board and try.If still wont work then you have a problem with monitor

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1 Answer

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IT IS YOUR POWER SOURCE HAD SAME PROBLEM CHANGED POWER PLUG HAS HOT TURNED OFF SINCE

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