Question about Toshiba TN50V71 50" Rear Projection Television

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My Toshiba Cinema Series TN50V71 will not turn on. The power light comes on solid for a few seconds then it begins to blink and continues to blink but the TV does not show any sign of responding or trying to turn on at all.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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ctf1800
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SOURCE: Toshiba 55" 55H70 model. Turns OFF, but won't turn ON until I unplug it from the wall first.

sounds like loose connections on the convergance amps ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 25, 2007

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ctf1800
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SOURCE: Toshiba 65HX81 would not show any pictures power light blinking

how many times does it blink?

Posted on Dec 25, 2007

Slinteriors
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SOURCE: Toshiba TP50H95 TV Won't turn on - Pete

You will need to trouble shoot the start up and shutdown circuits. Often this is a minor component failing causing the set to not power up or go into protective shutdown. Do you have the service manual for this TV?

Posted on Mar 02, 2008

  • 2 Answers

SOURCE: Toshiba 52HM95 lights blinking

Mine was having the same problem. Just heard back from the shop and they said it's the light engine. They want $750 to fix!!!

Posted on Oct 29, 2008

ginko
  • 19396 Answers

SOURCE: toshiba 46H84 tv turned off light blinking

The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Posted on May 22, 2009

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http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
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http://www.hdtvoice.com/voice/showthread.php?t=28929

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