Question about Toshiba TN43V71 43" Rear Projection Television

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Toshiba TN43V71 intermittently shut off

My projection TV Toshiba TN43V71 intermittently turn off ifself and the LED power light keeps flashing. During the blinking of the LED, I can not turn off the TV by pressing the power button. The only way to turn the TV off and then turn it back on is to unplug the power cord. What is the possibilities and how to fix it?

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  • troy_fizzard Feb 14, 2009

    what is the fix for this issue?

  • Anonymous Mar 14, 2014

    I have a TW65X81 Toshiba, when I press the on botton I hear click sounds on the rear, also the front small LED light begins to flash

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Posted on Dec 09, 2006

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I have a 56 in hdtv Panasonic tv will not come on green light flashes 20 times then goes to red. Help, on disability fixed income & cant afford to get repair or new tv. Please help, as soon as poss


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Panasonic Plasma 14 Blink Code Explained with Repair Info How to ... I guess I'll try the SC board and if that does not work simply save up for a new ... The red power led was flashing 12 timespause a few seconds then flash 12 again. ... It powers up and shows the green power light is on, but there's no ...

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Oct 24, 2015 - More about : power light flashing wont turn ... December 20, 2013 10:12:55 AM ... sound like it is coming on then it shuts off and the red power light flashes slowly. ... 50in Plasma tv power light is flashing 8 times and won't turn on. ...tv to come on bcause the power button keep blinking my tv will not come on.

Nov 06, 2015 | Panasonic Televison & Video

1 Answer

It was working fine until yesterday. It shut itself off. I powered it back on and befor the screen could come back on it shut itself off. I checked cables and uplugged it for 24 hours. The first time...


Hi Daniel,

Please check if you can access the "error code operational check" to narrow down where the fault came from.
How to enter to error code operational check.
Note : The TV must be in shutdown and not have been switched off. When the TV is switched off, the error code automatically resets to 12 (no error).
Press the buttons on the front panel "Input/Device" and "Menu" at the same time and hold it for 5 sec, activate the error code mode. The LED light will flashes denoting a two digit error code.
Example : if the error code is 22, the led will flash two times pause and then flash two times and will repeat the error code for five times.

If you can't access the error code operational check , please let me know the exact pattern of the flashes of the led light and its color. Check if it will continually flashes green to give you the caused of the symptoms and best solution.

Good luck and take care.

Nov 15, 2011 | Mitsubishi VS-50805 50" Rear Projection...

2 Answers

I'm having trouble with my Toshiba 42HL196 TV. It won't power on. There is a flashing red light on front. I've read the manual and done everything it suggests with no success. I've checked inside the tv...


SYMPTOM: Won't turn on or intermittently won't turn on, Red LED Flashes.

CAUSE: Loss of Main Switched Power Sources. Standby power is OK.
SOLUTION: Replace Regulator IC Q820 with Toshiba Part # 23135094

Jan 18, 2011 | Toshiba 42HL196 42 in. LCD HDTV

1 Answer

NEED TOSHIBA TN43V71 CONVERGENCE CIRCUIT PART NUMBER


Projection TV2_bing.gif sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - TV2_bing.gif makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Mar 04, 2010 | Toshiba TN43V71 43" Rear Projection...

1 Answer

Toshiba 50HX81 projection 'tv- blinking red light


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.

Jan 27, 2009 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Power up Problem


my hitachi model number:55fx48b suddenly just stopped. I can unplug the tv, then turn it back on and red led light will come on for 2 seconds and shuts back off! Can you please help me

Jun 28, 2008 | Hitachi 55FX48B 55" Rear Projection...

2 Answers

Hitachi 61UDX10B









[BRAND SPECIFIC][TOSHIBA][QUICK FIXES]
Flashing LED
<< Back to Quick Fixes Page
If your set all of a sudden won't come on, e.g., the screen is blank, but the LED on the under the screen next to the on/off switch keeps flashing, then there may be an internal fault on the set that needs to be reset.
To force the reset, try this:
  • Unplug the set and wait a few seconds
  • Replug and see if the video returns
Whenever the set senses an internal fault through its monitoring circuitry, it essentially shuts down the set. The flashing LED provides the indication that a fault has been detected. Removing power to the set resets the monitoring circuitry. When plugged back in, the circuitry again does a check of the system. If it finds that there truly is a problem, then the set is shut down and the LED will again flash.

Jan 22, 2008 | Hitachi 61UWX10B 61" Rear Projection...

1 Answer

Toshiba 43A61 - No Picture, no sound


If your set all of a sudden won't come on, e.g., the screen is blank, but the LED on the under the screen next to the on/off switch keeps flashing, then there may be an internal fault on the set that needs to be reset.
To force the reset, try this:
  • Unplug the set and wait a few seconds
  • Replug and see if the video returns
Whenever the set senses an internal fault through its monitoring circuitry, it essentially shuts down the set. The flashing LED provides the indication that a fault has been detected. Removing power to the set resets the monitoring circuitry. When plugged back in, the circuitry again does a check of the system. If it finds that there truly is a problem, then the set is shut down and the LED will again flash. In this case, you need to call a service tech. Most of the time, however, the unplug/replug routine is enough to get the set up and running.

Dec 11, 2007 | Toshiba 43A61 43" Rear Projection...

1 Answer

Toshiba TN43V71 43 in rear projection


Hello WendyOreo,

 

It sounds like your switching power supply or you High Voltage power supply has malfunctioned. These sections control all power to the TV and can produce the situation you are describing. If you do not have a background in electronics, I would suggest that you have a TV repairperson come over and check your TV out.

 

I say this because there are voltages in a TV set that can kill, so caution is needed.

 

I hope this helps

Thank you,

Shuttle83

 

Oct 17, 2007 | Toshiba TN43V71 43" Rear Projection...

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