Question about Toshiba 40H80 40" Rear Projection Television

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Toshiba 40h80 red light blinking

T.V. Won't power on, the red power light keeps blinking.

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  • Toshiba Master
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I would suspect the problem is in the convergence circuit---only one simple way to know---get at and un-solder all 18 pins on both the STK chips it uses.

Once they are free try to turn set on--if it comes on one of the chips is bad and both will have to be replaced.
toshiba 40h80 red light blinking - 12_6_2012_12_54_51_am.jpg

Posted on Dec 06, 2012

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Posted on Jan 02, 2017

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  • 6 Answers

SOURCE: Toshiba 65H81 blank screen and red blinking light....help

I don't think is any lamps.
If you are handy try to open the back of your tv, (unplug it first) don't touch anything just yet, you need to make sure you discharge any static left on the power board (the first from your left )Unplug power cord from the board. Take a heavy long screwdriver (Isolated) and lightly, touch a few parts on the board including the thick red wires that go to the lamps. Once that's done its time to put your dexterity at work. You need to lift that board (PD 0074) so that you can check some fuses like F850, F852, etc. for continuity. Mine were out. I had replaced those two and I had tv for another year. Remove the screws that hold the board. Now, this board PD0074 is connected to the next board by two white connectors and one blue. ....lift them up from one side with your finger nail. Don't unplug anything from the power board, just loose some wires so that you can lift the whole board on one edge. Get a voltmeter and set it to check continuity. Mine has a buzz. Look for them fuses if they are bad , ....replace them. (You can buy them at Partstore.com.....punch in "fuses"or "125V 2A")
In my case that was the only problem a year ago. Now I also have the same problem but this trick didn't work for me anymore. The Power Co,. messed me up big this time. In fact the problem with these Toshiba rear proj. is that when the power in your house goes out and comes back right a way in a split second and you don't have a power regulator, guess what : 'red led blinking'
In my case this time the whole power went on and off a few times within 10 sec. and by the time I got to the TV to unplug, it was to late. I think I have to replace the whole PD0074 board....and that's expensive.
Good luck

Posted on Mar 10, 2008

ctf1800
  • 4402 Answers

SOURCE: MY tV will not power and red light keeps blinking

http://www.keohi.com/keohihdtv/brandspecific/toshiba/quickfix/flashing_led.html

Posted on Dec 05, 2007

  • 1694 Answers

SOURCE: Picture went off then Red light blinks all the time

Not an easy fix....requires chassis pull, careful soldering and
replacement of parts and fuses.....would you like step-by-step?
........................T.

Posted on Feb 01, 2008

  • 2 Answers

SOURCE: toshiba dlp 46 inch red light keeps blinking

42 inch Toshiba DLP. Was watching a movie and the screen went dark. The red light started to flash and kept flashing. any ideas 

Posted on Nov 24, 2008

  • 13 Answers

SOURCE: TV turns off and power light blinks unpluged andd still does it.

Likely to be the STK convergence chips causing a protection circuit to switch the TV off. Have you got any onscreen convergence problems (i.e, colour fringes)?

Posted on May 28, 2009

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