I have a 26' Toshiba LCD TV Model: 26WL65G. When I plug in and turn it on it seems to start normally, but when screen turns on blue screen appears as normal and it goes back to stand-by mode immidiately in 1 second. I suspected from the backlight inverter board and replaced it. Also I checked the ccfls but each one works fine. I also replaced the capacitors on the power supply with new ones. It still makes the same. Finally I tried to run the TV with disconnected cables from mainboard to inverter. There are 2 cables which goes from the mainboard to inverter. I disconnected them and it didnt shut down. Sound comes normally but screen doesnt open up. I think there might be problem with mainboard. Anyone can help me about this issue? If there is something I can do without replacing the mainboard??
TV Model: 26WL65G
Mainboard Model: 17MB15E-7
Inverter Model: I260B1-12C
Re: I have a 26' Toshiba LCD TV Model: 26WL65G. When I...
Note that if it is a backlight inverter board problem you will still have sound. SInce you have no sound I would suspect a power supply or main A/B board malfunction. Do you know how to use a multimeter?
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How old is your TV? This normally indicates a power problem. It could be any of the following: power supply on the TV, faulty power strip, faulty wall outlet, faulty circuit board inside the TV, faulty power cord/plug, bad airflow/clogged vents restricting air movement into the TV (can cause intermittent power faults),bad sensor inside TV. This is not completely inclusive by any means. It does mean that you should have it looked at. Someone knowledgeable/skilled should be able to determine the cause fairly quickly using a multimeter.
If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
The unit has a fault on its power board and sustain board. It turns off because the sensor is preventing some component from bacoming overheated and catching fire or damaging further components. Seel professional repair.
my toshiba tv.is around 6yrs. old...this morning when i tried to turn it on,..nothing...i have cable so i use a "box" & my cable company remote...i can turn on the box manually..the remote turns on my dvd player.{sony]...we had a blizzard start during the night..my cable company said they were having problems..i cannot turn on the tv manually..it does nothing at all...is there a safety feature that is causing the problem?..the model number is;27df46...serial number;BAB614020144A...PLEASE ADVISE...Fiona Duffy
you can have a bad CRT, a bad chroma module, either one can show the symptoms you are describing. You will need a TV repair tech for the right diagnosis.
Just try to reset so picture will back to normal again, some LCD TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time. 1. Unplug the LCD TV power cord from the power outlet. 2. Unplug any connected devices (DVD, Set-top boxes, etc...) 3. Press and hold the LCD TV power button for five seconds. 4. Plug the LCD TV power cord back into the power outlet and turn on the TV. 5. Open the on-screen menu to confirm that the LCD TV is responding again. 6. Turn off the LCD TV and reconnect the devices. 7. Turn on the LCD TV.
Follow up on No DTV tuner after unplugging it a month for vacation. After I let it set plugged in for about 2-3 days it started working normally again and has been fine ever since. I hope this may help someone else. Genez 6-7-09
1)Please verify your model # from back of set......
2)Reduce the color to minimum or tune in a black & white chan.
you should see gray, not yellow hue
3)Remove lower front grill cover & access panel.....locate the
focus / screen control block...turn blue screen control slightly
CW......red,green and blue must mix to equal gray
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