Question about Toshiba 57HC85 57" Television

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Blinking red light

Power outage no picture no sound

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: TV on/off light keeps blinking red light/no sound or picture on screen

Here's a solution that I received from an TV expert in another website: "This sounds like a power supply problem. i have seen it several time on your model. i would not keep trying to turn it on it might damage something else in the tv. the reason it is shutting off is because the power supply is putting out too much voltage. a repair cost will range around 300-400. this is a great model and well worth a repair. here is a web site that might help you in finding a repairman.
http://www.nesda.com/locator/state_search.php." <-- $300-$400 is too much! But throwing away a 300lbs TV will cost a lot of $$$ for the towing and dumping too. I haven't decide what to do yet.

Posted on Dec 19, 2007

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localwonder
  • 6784 Answers

SOURCE: blinking red power light no pic or sound

HI, this is a power board issue. your power board is unable to distribute an regulate the current throughout the set. you can purchase a new board by clicking the link below.


CLICK HERE

Posted on May 21, 2009

  • 1015 Answers

SOURCE: red power light continuously blinking. no picture no sound.

It could be the lamp went out and needs replacement. The Toshiba website states when this happens to unplug the televison for 10 minutes then plug back in. If that does not work then try another power outlet. If that does not work then call for service

Posted on Sep 12, 2009

  • 8457 Answers

SOURCE: my toshiba 57h93 worked fine this morning power went out

Ur DM power board is dead,must be replaced.Try this
website for the board.Tv repair World.com.

Posted on Oct 20, 2009

freetek
  • 5568 Answers

SOURCE: power light blinks but no picture or sound

The power light is using the same small 'always on' power supply that keeps the infra-red receiver for remote functions alive too. It is likely that the main power supply is sick and will need repair or replacement.
This is probably a separate board (these are often outsourced to specialty companies) and should be user replaceable once you identify it.
What you can do is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.

Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.

If you see signs of overheating such as discoloration of the board material, the PSU may not be repairable but if you can find a part number on the board, you might be able to buy the power supply from the mfr.(or company linked below) and install it yourself but it will likely have the same problem eventually unless they have altered the design or improved component quality.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the main power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload and the power supply for the backlight may be at fault.


Possible board source:

Jimmy's Parts

Posted on Nov 23, 2009

Testimonial: "great information! thought it might be power supply but needed expert view and advice. Thank You very much."

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Repairing Flat Screen TV - Blacked out with blinking red light

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