Question about Toshiba 34HF81 34" TV

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Toshiba 34" HDTV "standard" TV...not a flat panel....

I just noticed this week that our red LED button is blinking whether the TV is on or off. The TV is working fine, but it is disconcerting to see that light blinking.  Our we headed to a bad place with this 5-6 year old TV?

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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 21, 2009

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No picture no sound. Red led blinks once relay clicks once and repeats


These blinks [flashes] are fault indication. You can get an idea about the faulty stage circuit inside the TV, by the number of these blinks. Count it carefully, by switching it ON and OFF, more than 2 times at least, so that, you can make sure about the number of these blinks. If you wish to get more details, check the site linked here. Surf the site in "MOSAIC" view.
http://electronicshelponline.blogspot.com/

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Hello
Set up codes for Comcast universal remote to Toshiba TV are:
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Usually it is either the flyback transformer, the tuning capacitors in the collector circuit of the horizontal output transistor(s) as well as the transistor(s) which could be faulty. These parts should be replaced at the same time.

Short-circuit horizontal output stage - hence the 7 blinks error code from the standby LED.

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In most cases this error will dissapear by switching your television off at the wall and then switching tv on (via power button on TV front/side panel) "Whilst still switched off at wall outlet"

This will discharge all capacitors inside the TV

Now turn TV power button off then switch back on at the wall outelt then try to resume watching TV.

This solution may clear the blinking red light however if it does not it could be a more serious issue such as a blown fuse or even blown control circuit on the TV, In this case you should decide whether a repair is economical or to replace the TV.

This solution is based assumption this a CRT television and not an LCD.

Hope this helps

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To reset the TV to factory settings
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Turn the TV on.
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