Question about Toshiba 40H80 40" Rear Projection Television
T.V. Won't power on, the red power light keeps blinking.
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.
Posted on Dec 06, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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.
Posted on Mar 10, 2008
Not an easy fix....requires chassis pull, careful soldering and
replacement of parts and fuses.....would you like step-by-step?
Posted on Feb 01, 2008
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
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
Tips for a great answer:
Mar 08, 2013 | Televison & Video
Jul 25, 2012 | Magnavox 32MF301B LCD TV
Jun 16, 2012 | Toshiba 52HL167 52 in. LCD HDTV
May 15, 2012 | Sony Video Game Consoles & Games
Jan 18, 2012 | Polaroid 4241-TLXB 42 in. LCD Television
Sep 05, 2011 | Toshiba 46HM95 46" HDTV
Aug 20, 2011 | Kyocera Zio M6000 Cricket
Jun 26, 2008 | Toshiba 46H84 46" Rear Projection...
Dec 06, 2007 | Toshiba 40H80 40" Rear Projection...
104 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: