Question about Toshiba 50HP66 50 in. Plasma Television

1 Answer

I have sound, but no picture. It just blinks, with a faded back ground

It work fine last night. Just turned it on this morning. When I try and use the remote for the tv, to see menu, I can bearlt see it, because of the blinking

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  • martinkjol
    martinkjol Dec 10, 2012

    Thank you, but that didn't help

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1 Answer

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  • Toshiba Master
  • 14,553 Answers

Try to unplug set and or a box if used from power for a while, plug both back and see if a reboot that will happen helps or not.

Posted on Dec 10, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 52 Answers

SOURCE: Red Blinking Light

These types of problems are allways hard to diagnose.. If you were to power on the set and preform tests, you would think that everything was fine until the moment it shuts off.

Look on the main power board and see if you cant find the thyristor (thermal switch), those are the things that when heated will cause the set to power off for safety reasons.. They are normally placed where ever a large heatsink is. That may give you a location as to the problem and you can put a meter around its 2 pins with the set off and unplugged a couple of min after failure, if its short (0 ohms) thats not the problem, if its open, it triggered the event.

Second, you can run the set for a while and check the voltages and Ve, Va, VCC, Vsetup etc and compair to the markings on the plasma PDP sticker. If you see one is falling down over time (volts will be lost as heat) then you can isolate that portion of the supply.

Third and allways the best way to go about these problems is buy a thermal gun and moniter various spots for heat.

Its just vary hard to say, resistance could be off somewhere, diodes could be overheating as well as fets and caps. Thats why a good thermal gun can point you to exactly where the problem is.

Hope this info helps, but I would suspect the problem is on the main power supply itself and not the y sus and z sus boards side boards.

Posted on Aug 26, 2008

dsacco86
  • 1077 Answers

SOURCE: The picture blinks on for just a second, then goes

The most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

Posted on Jun 28, 2009

  • 308 Answers

SOURCE: I have a Toshiba 32av500u HD LCD TV.NO picture

Its a backlight problem. Common with this model. Under warranty? If not, then its a service shop repair.

Posted on Mar 26, 2010

  • 144 Answers

SOURCE: RED LIGHT KEEPS BLINKING..WAS LIKE A POWER SURGE

Surge protectors aren't perfect... If the surge was big enough and long enough then it can cause problems. Most manufacturers have on-board protection as well. That's not perfect either. Often the surge does nothing more than confuse the microprocessor (computer) that controls all aspects of your television. The fact that the red light is blinking means that your set is trying to protect itself. This can happen for one of two reasons. Something in the set has failed. Usually the power supply inside the set possibly also a trouble in the scan section of your set. These are normally a shop repair. The other thing is when the microprocessor is confused it will do nothing further until it's reset. To reset the processor simply unplug the set from the wall and wait 10 minutes. Plug it back in and if it works then happy viewing. If it doesn't then you will need a repair.

If is a failure caused by a failure in the grid that delivers power to your set then you are usually able to file a claim for the repairs. Contact your local power company. explain what happened. If it's their fault then usually they will pay for a repair. I know the PG&E does.

Zashiban

Posted on Jun 23, 2010

budmrtn
  • 11361 Answers

SOURCE: i have a toshiba 37 wlt 58 lcd tv . i watched the

Sections of the power supply may have gone out, or it detects short circuits in the backlight inverter board or in the power supply itself.
Those are the two areas you need to check. Look fo bad caps with leaking/bulging top fist in the power supply.
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Posted on Aug 13, 2010

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