Question about Toshiba TW40H80 40" Rear Projection Television

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Toshiba TW40H80 40"

Power on by remote produces blinking power light. Reset power by removing power from AC outlet. Power on by remote produces normal startup - good picture and sound. Picture begins to display convergence color problems intermittently. Picture turns to black with blinking power light.

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The problem with the picture blacking out and the red LED blinking is probably a bad connection on two power supply capacitors. They will be labeled, C809 and C810. Common fault with this chassis. Now for the convergence, do not waist your time re soldering the convergence IC's. Simply replace them and your problems should go away. Good Luck

Posted on Nov 07, 2007

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The key to this repair is "intermittant convergence issues".
1) Locate convergence amps ( large IC's mounted on large heatsinks.) On PCB in back.
2)Remove circuit board
3)solder any/all bad connects
4) reassemble - test run

Note:Fuses are not an issue at this time.
Note:Convergence amp IC's should be replaced for durable,
         long-lasting repair.

Posted on Oct 25, 2007

  • Vista Electronics Nov 05, 2007

    The "second" issue of " pix blacks out, blinks LED" will require

    1) Remove chassis = note position of each wire disconnected.

    2) Flip chassis over = solder any / all bad connects

    3) Practice visual acuity technique = if you see an over-heated

    area or evidence of capacitor leakage, check / change caps

    as needed....

    4) Replace convergence IC's while you are this far

    5) Re-assemble, test


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If you are good at electronic repairing then try this
any/all bad connects on convergence board.
Convergence PCB is up front,behind speaker grills/access panel
2.Check both 3.15 amp fuses.Re-install--usually,
no further adjustments needed.
To improve pix quality,remove rear cover--clean RGB lens caps w/soft cloth.
PS:If you are not good at this then there cant be a better thing than giving it for complete servicing

Posted on Oct 12, 2007

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Ok! maybe you have defective convergence correction circuit! sir do you have experience in electronic repairing?

Posted on Oct 12, 2007

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Need to know how many times the led is blinking.

Try this link for more informationmessage_type_solution.png

Re: tv kdl-55ex620 red light blink 8 times Do a Power Reset. 1. While the TV is off, unplug the power cord of the TV from the electrical outlet. 2. Let the TV remain without power for 60 seconds. 3. Plug the power cord back into the electrical outlet. (If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.) 4. Turn on the TV. 5. When the TV powers on and a picture is displayed, reset the TV to factory default settings.
  • If the Reset message does not appear and the TV turns off and on, begin again from step 5.
  • If the standby light begins blinking eight times, return to step 1.
6. After the Reset message appears, allow the TV to reset. Do not press any buttons on the remote control or on the TV and do not make any other adjustments for 1 minute. 7. Unplug the power cord from the electrical outlet. 8. Allow the TV to remain without power for 10 seconds. 9. Plug the power cord back into the electrical outlet. 10. Turn on the TV.
  • The initial setup screen displays if the above procedures were performed correctly.
11. Follow the on-screen instructions to complete the initial set up. 12. Perform a system software (firmware) update.

Sep 04, 2012 | Sony KDL55EX620 55 inch BRAVIA 1080p LED...



Service tool modeHow to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for (3sec).
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.Exit
1. Disconnect the AC cord from wall outlet.
Hotel mode
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu In order to display the Hotel mode setup menu, please enter the following command(within 2 second).
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu Disconnect AC power cord from wall outlet.
Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timingCheck of the IIC bus linesHow to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Disconnect the AC cord from wall outlet.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.



on Jun 30, 2015 | Panasonic Tc-50ps14 Tv Power Supply Board...

1 Answer


maybe the ac adapter is burned up or outlet bad or the ac jack on computer is bad.

Jun 17, 2012 | Toshiba Satellite (p25-s5093) PC Notebook

1 Answer

Hi, i have here a mitsubishi WD-57733. once the unit is switch ON, green LED light and a few seconds the status LED light then shuts off. I think light engines good since i just replaced a new lamp.

hello i've just checked the manual for here is some information

None TV is powered off. Normal operation.

Green TV is powered on. Normal operation.

Green 1. TV just plugged into AC outlet.

Wait until blinking stops before turning on (approximately 1

minute). Normal operation.

2. AC just restored after power failure.

3. TV Rebooting after System Reset was


4. TV Rebooting after power fluctuation

or receiving abnormal digital signals

from digital channel, or digital device.

5. You have begun the procedure to

update software from an authorized

flash memory device.

For detailed information, see the instructions that accompany

the authorized software update. IMPORTANT: Do not

use unauthorized software at any time.

Green TV just powered off and lamp is


Starts to blink 30 seconds after turning off TV. TV can be turned

on before blinking starts or after blinking stops, but not while the
indicator is blinking. Normal operation. hope it helps regards shaun
Green TV powered off and auto-on timer is set. Normal operation. TV can be turned on at any time.

Dec 06, 2010 | Mitsubishi Televison & Video

1 Answer

MY Toshiba 65H93 doesn't come on.When I press the power button nothing happen.But when I unplug the it from the AC outlet and plug it back into the AC Outlet I here a clicking sound, but the set still...

Same here! Just happened yesterday after we had a power outage in the neighborhood and when the power to the neighborhood was restored my 65H93 would not power on with the remote or the power button on the front of the TV. I get the same clicking sound when unplugging and or pushing the reset on the front of the TV. I also see a red light come on inside for about a half a second after hitting reset or unplug/replugging it in. I'm thinking it has something to do with the standby circuit not coming on due to some problem with the power supply/circuit board?

Have you found out anything yet? I'll let you know if I find out anything also.

Jul 18, 2010 | Toshiba 65H93 65" Rear Projection...

2 Answers

Blinking yellow light ,no picture or sound.

You have done all you can do. If you had a power outage, when the power came back on a it surged and probably caused a Power Supply problem or something in the micro controller to fail. Either way it 's not good. I would call Toshiba and let them guide you to a Service Facility that can check it out. Depending on your Homeowners Insurance, repairs could be coverd or unit be replaced depending on cost to repair.
Sorry I am not able to help further,

Jun 22, 2009 | Toshiba 65HM167 65" Projection Television

1 Answer

Lap top problem


If the AC power light is blinking, try the following steps:

1 Cut off power to the computer by disconnecting the AC adaptor and removing the battery. The error condition will be interrupted, and the AC power light will stop flashing.

2 Put the battery back into the computer. Do not connect the AC adaptor. Try turning the computer on again. If the computer starts normally, the AC adaptor may be
defective and will need to be replaced. If the AC power light starts flashing, remove the battery, and continue with the steps below.

3 Connect the AC adaptor to the computer. Leave the battery out of the computer. Try turning the computer on again. If the computer starts normally, the battery may need charging, may be depleted, or may be defective. Turn the computer on, insert the battery, and then leave the computer running for several hours, which will deliver a slow, steady “trickle-charge” to the battery. Once the battery has been trickle-charged, it may begin working correctly again. If the trickle-charging does not prove effective, consider replacing the battery with a new one.

4 Connect the AC adaptor to a different power outlet, preferably in a different room. If the computer starts normally, there may be a problem with the AC outlet itself, or the voltage level available from it.

5 Verify that the AC adaptor is the correct unit for your computer model. The computer may not be able to start from an AC adaptor that is rated for less current (amperage) than the computer requires, even if the rated voltage is correct, and the plug fits correctly in the DC-IN socket. The labels on the bottom of the computer and the AC adaptor show the specifications for voltage ("V") and current ("A") for each device. The voltage level must match exactly. The amperage rating of the AC adaptor must be equal to or greater than that required by the computer


Mar 21, 2008 | Toshiba Satellite 1805-S204 Notebook

1 Answer

Mitsubishi WD 57833 DLP

You problem is terminal. Look on line and read more about the blinking green light of death. Push for resolution and don't take No for an answer. Mitsu. knows there are problems.

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1 Answer

Toshiba Satellite 1405 - Power problem

Hi Don

Although symptom is showing that AC Adaptor is not working as its not providing power to the unit. I will suggest you to perform some basic troubleshooting steps. Check if outlet is working if not check with known working outlet. If you have a multimeter you can the output of the AC adaptor.

Also you can perform full power cycle and component discharge. Take the battery out and disconnect the AC adaptor press the power button and hold about 7 seconds. After that put the AC adaptor in and test again.

If issue persist take to nearest Service center check with known working AC adaptor. After that I believe you will figure out the best solution.

Good Luck

Jan 21, 2008 | Toshiba Satellite 1405-S151 Notebook

2 Answers

Mitsubishi WS73713 - Now working - Timer light flashing.

My Mitsubishi WS-73713 had the same blinking green timer light problem and would not turn on. I tried the reset button and unplugging power to no avail. I found that by simultaneously holding down the remote control "power" button and "volume" button for about 30 seconds the blinking light would go out and a solid green light would come on. Even though the solid green light came on the unit would still not power up. After doing this several times however the unit did finally power up in a normal mode and appears to be working again. It's worth trying before calling in for an expensive repair. PS - From here on out I'm sticking with SONY or Toshiba sets which have given be great service.

Nov 09, 2007 | Televison & Video

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