Question about Toshiba 50HM66 52" Television

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Toshiba 56hm66 TV flickering problem. Still can se ethe picture but the entire screen flickering from fast pace to slower. When it is slow, you can actually see the entire screen go balck

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6ya6ya
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Posted on Jan 02, 2017

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Slinteriors
  • 8617 Answers

SOURCE: Toshiba 57H82 entire screen flickers. Not clear. mult images

Sounds like the Hyper board is needing replacement very common problem for toshibas.

Posted on Dec 27, 2008

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SOURCE: toshiba 56hm66 lamp problem

Sounds like the light engine if it's blowing the lamps. Are you sure all cooling fans are operating?

Posted on Jan 30, 2009

rylee_smith
  • 8619 Answers

SOURCE: toshiba 56HM195 white flickering light

Hi


Thanks for using FixYa. If you have already replaced the lamp with a new one and you know it is absolutely fine then you are right, the issue is with the ballast that has gone bad and should be replaced as it is the power source for the bulb.Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Aug 17, 2010

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Every time i turn on my sony PFM-42x1 the screen flickers and blinks with colored lines all over it. at first it flickers very fast and as the tv "warms up" the flickering slows down until it stops all...


I have the same TV with the same problem. I am sorry that all the answers are so silly and basic. I just open up mine to check all the compositors to see if their are any Bulging or to see if anything looks damage. I will pull the Power supply and start checking the compositors. and let you know. I will look in other places first to see if I can get some REAL Answers. Poco Zocko Actor

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Toshiba 56hm66 bulbs popping


may have got a bad new one or ballast board in set is bad. It powers the lamp.

Nov 29, 2012 | Toshiba 56HM66 56" Projection HDTV

1 Answer

Toshiba 56hm66 dark screen


I seem to remember this issue in their sets, might want to spend some time with the model number and search "problems" as I have seen this in one of these before---several thousand sets ago.

Apr 08, 2012 | Toshiba 56HM66 56" Projection HDTV

1 Answer

Toshiba 56HM66. Picture freezes, then picture goes out. The blue light stays on and the yellow light blinks 15 times, 15 times, 15 times and then the picture comes back. The voice never goes out. This...


this is a digital board problem. Part# 75004946.
has to be data transferred from dmd board. options menu in service mode. scroll down to dmd>digital transfer. press left arrow on remote to initiate. when says ok exit on remote an shut off................. Meder's Tv

May 01, 2010 | Toshiba 56HM66 56" Projection HDTV

1 Answer

56HM66 Freezes and then cycles on and off.


i have same problem ?Could you tell me if you figured the problem out? solved it thansk

Sep 30, 2009 | Toshiba 56HM66 56" Projection HDTV

2 Answers

I'm getting a rainbow tint on the upper 1/5th of


usually when the lamp is going out the picture gets dark if you are getting a rainbow tint most likely the light engine is going bad.

Aug 17, 2009 | Toshiba 56HM66 56" Projection HDTV

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

56hm66


you need to replace the light engine. There is a problem with tunnel.

Jul 11, 2008 | Toshiba 56HM66 56" Projection HDTV

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