Question about Toshiba 57H81 57" Rear Projection Television

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Have toshiba 2002 projection tv model 57h81 when plug in red light on front where power button is the tv has no sound and no picture please tell me what it means or is too expensive to fix not worth it need to know how much to fix myself and price of part or parts thank u

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  • Toshiba Master
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have toshiba 2002 projection tv model 57h81 when - 9f2965aa-94e3-4244-a87e-5f0264d7f11c.jpgThe price of the parts depend on the problem I have done a problem part list on to this picture hope this help most of the parts if you type them into ebay the parts will come up check them to the one on the board. sorry had to change the size of the picture as it has to be under 500k. switches are in the red ring if they don't click when you try to turn on or just keep clicking then i would check them. you should be able to download the picture and enlarge the picture so you can see the problem areas i have put on it hope this helps there is a bit of soldering to do to replace them if you need more help please reply.

Posted on Oct 21, 2013

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Posted on Jan 02, 2017

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Shuttle83
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SOURCE: 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

 

Posted on Oct 17, 2007

  • 7 Answers

SOURCE: TOSHIBA TV NO SOUND NO PICTURE, POWER LIGHT IS ON

the lamp in the projector might have went. try replaceing it. to do so try

ADTECH SYSTEMS they may help

there in mass.
call David Crepeau at 978 261 1087 tell him Ryan Bolduk sent you
depending where you live. They maybe able to send someone out from there sub company

Posted on Sep 18, 2008

  • 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

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1 Answer

Toshiba 2002 projection tv 57h81 has red light no sound no picture


Hello,

Projector TV's have a tube for each function e.g. Video 1, Video 2, TV. Does the TV just not work or the VCR<DVD<Game console modes not work as well? If one works and the others do not you should be able to replace that tube, module, piece.

I hope this helps.

Oct 21, 2013 | Toshiba 57H81 57" Rear Projection...

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Toshiba 57H81 Blinking power light


Greetings,

Power supply cannot sustain / provide juice to the whole system.
If you are qualified to do electronics, check the power supply section, otherwise contact a repairman.

Keep us posted and thank you for using our service.
FixYa for all your troubleshooting needs.

Jun 29, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 57H81 Rear Projection TV Problem


IT is possible that the power connector in the back of the set is either faulty or broken, you would have to go into the back of the set, and look and see in the connector to the power board isloose, if it is, then you might be able to resolder it on. If not, then there is a problem with the plug, try a different outlet.

Jan 10, 2008 | Toshiba 57H81 57" Rear Projection...

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57H81 57 in. Rear Projection Television: My Toshiba model 57h81 is 5+ years old. It just s...


I had the same issue with my 57 in. Mitsubishi. I fixed it by buying a new projection bulb. The Mitsubishi manual indicated this was the fix for my Mitsubishi TV. Be advised that new projection bulbs are not inexpensive. My TV works like new once the projection bulb was replaced.

May 03, 2010 | Televison & Video

1 Answer

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

Sep 12, 2009 | Toshiba 57H81 57" Rear Projection...

3 Answers

Toshiba 57H81 Flashing Red Power Light, Blown Fused F850+F852


Solved by resoldering some solder joints!!!!!!!
********
Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001

Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852

Symptoms January, 2009:

  • Upon turning on set I got flashing red power light and nothing else.
  • Removing plug for one minute and plugging in results in:
    • Audible click, steady red power light for 2 seconds then slow flashing red light
    • Pushing power button results in steady red for about 2 seconds then slow flashing red light, no other set activity
  • Removing power cord for several hours and plugging back in made no change
    • Audible click, steady red for about 2 seconds then slow flashing red light
  • Possible related note: Over past several months occasionally the entire screen would flicker momentarily and at other times be problem free for weeks.
  • Fuses F850 and F852 found blown

Repairs Made:
  • PD0074 DEF/CON Power Board
    • There are two main power supply capacitors in this set. They are C-809 and C-810. One their negative lead on the printed circuit board re-soldered leads and nearby contacts. I’m told that because the factory left out a printed circuit board eyelet, the connection will come loose over time. When I called Toshiba customer service they said there was a known solder joint problem causing blinking red light.
    • Replaced blown fuses F850 and F852.
      • I actually installed a fuse panel on the inside of the cabinet and routed the fuse connections here instead of ordering the special fuses and replacing them on the circuit board.
      • Had to use a 5 Amp SLO-BLOW for F850. Fast blow does not survive power up. Get the red blinking light.
      • Used a fast blow 2 Amp for F852.
  • PD0073 SIGNAL Board
    • Re-soldered Q751 + Q752 STK392-110 Convergence Amps
    • Re-soldered adjacent pads that looks suspicious

Total Cost to Repair about $10
  • Twelve hours of my time over three days to research issue, disassemble set, make repairs, add fuse panel.
  • Already owned Service Manual and Circuit diagrams from a different 2004 repair.
  • Less than ten dollars at Radio Shack for fuses and fuse panel. Already had wires, etc.
  • Some solder. Already owned de-soldering tools, etc.
  • Visited both local authorized Toshiba factory service repair facilities. One said repair would have to include replacing Q751 + Q752 STK392-110 Convergence Amps with ST392-180, and realigning set for a total of $500+ and it would be more if they had to order a power board. NO THANK YOU! Other shop said $65 for site visit and $30 to make an estimate that could be applied to repair.

Jan 04, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 57h81 red light blinking


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jun 14, 2017 | Toshiba 57H81 57" Rear Projection...

1 Answer

TOSHIBA TV NO SOUND NO PICTURE, POWER LIGHT IS ON


the lamp in the projector might have went. try replaceing it. to do so try

ADTECH SYSTEMS they may help

there in mass.
call David Crepeau at 978 261 1087 tell him Ryan Bolduk sent you
depending where you live. They maybe able to send someone out from there sub company

Sep 18, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba 57H81


Check all fuses in the power supply and look for any bad connrctions on the PCB. You are probably missing the 130 volt supply to the horizontal circuit. Common reasons are: Shorted horiz output transistor; flyback transformer, picture tube arcing , bad power regulator IC. In short, you need to get a qualified tech for this symptom. Hope this helps.

Oct 29, 2007 | Toshiba 57H81 57" Rear Projection...

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