Question about Toshiba 34HF84 34" TV

2 Answers

Tv won't turn on

Toshiba 34" is getting power. Can tell by the illuminated LED on the front of the TV. When I go to power it on it makes the sound like its going to come on.....that clicking noise that tv's make......but then nothing comes on the screen and about 10 seconds later it makes another ticking sound. The screen never powers on. -tried to switch plugs -tried to leave it unplugged for like a week......nothing -tried different remote (I had a universal and regular for it) -tried using the panel on the front of the TV in case it was a standby issue.....nothing

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  • uzomaben Jun 13, 2008

    Mine is a 50' Toshiba 50H81. Just went off by itself and wont turn on again except for a blinking red light on the Power button.

    Changed Sockets, Remote control and Batteries, still wont come on.

  • Anonymous Mar 23, 2014

    The led on the front of the tv just stays steady for a few seconds then bliks rapidly nothing I can d will stop this

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2 Answers

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  • Master
  • 3,130 Answers

Most likly it is a problem in the power supply regulator circuit. pretty common for Toshiba TV sets. If you know about TV serviceing, first thing to replace would be the regulator IC as that is the problem 80% of the time. if that does not help then you will need a schematic to trace out the regulator circuit. Good Luck PS please dont forget to rate this thread.

Posted on Oct 19, 2006

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The ticking sound could be high voltage breakdown, or noise from the line output transformer. The magnetic core material is a ceramic which is magneostrictive. This means, as the transformer core is magnetised by the coils of wire carrying current it changes size. This causes sound to be radiated. If you can hear 15KHz coming from the television, then the line timebase is working. If all you hear is a ticking sound, then most probably the circuit has a fault, such as a faulty line output transformer. If you have a good TV which ticks, it probably has a bad earth connection to the tube, or some arcing, and must be put right as this could cause a fault to occur.

Posted on Oct 22, 2006

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Posted on Jan 02, 2017

  • 81 Answers

SOURCE: intermittant remote

yes they do go bad. try cleaning the inside of the remote and check for a bad solder connection with-in the remote. the key pad can get dirty from your handling maybe a good cleaning but do not scrub it just lightly touch the pad with cue tip and alcohol

Posted on Mar 20, 2007

  • 1694 Answers

SOURCE: Toshiba 36inch color tv demo troubleshooting

Demo is activated / de-activated by holding a combination of
two buttons on the tv front for at least four seconds. Try menu &
power or vol up & chan up...........T.

Please rate this solution.......

Posted on Nov 12, 2007

andyroid85
  • 7 Answers

SOURCE: Toshiba 32A32 won't turn on

just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part

Posted on Aug 28, 2008

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Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.
For example, 3 flashes, then 7 flashes = 37.
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When I switch on my Sony Trinitron Tv , it won't turn ON , only the red LED flashing in front next to start button , and sounds tik tik. Please advice .


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Try unplugging the TV for about 10 minutes and then tunung it on again. Try a factory

To reset the TV to factory settings
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Toshiba 34" HDTV "standard" TV...not a flat panel....


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.

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