I have a sinotec 40' LED TV that does not want to switch on? The green light on the bottom left of the tv is illuminated but no picture displayed. Model is STL-43E3000G. Help please

The backlight led is burnt out, time to replace with new one. Most of the time it’s only 1-2 led are burnt. You need an electronic technician though. I may guide you if you want further assistance.

Yes, the answer is here

https://www.fixya.com/support/r29790007-repairing_own_television

..

I don't know your TV but are you sure that it is an "LED" TV? If not, it may be an "LCD" TV which is a bit different. An "LED" TV uses Light Emitting Diodes to illuminate the individual pixels or PIcture ELementS. If it is an "LCD" TV, the picture works more like an electronic digital watch. The picture is produced within the screen and uses a florescent tube on the bottom and side to back light the screen. If you can see the picture with a flashlight, I suspect that it is an "LCD" type. If it was an "LED" TV, and it didn't light up, the LED's that make up the pixels wouldn't be firing and you wouldn't be seeing a picture even with a flashlight. Just like any florescent light tube, these "LCD" back light tubes will dim with age until they eventually fail. If the Toshiba logo lights and goes out, this sounds like the bulbs or their high voltage drivers are failing. Good luck.

I have a sinotec STD-55D2000 Led TV
I switched it off before I sleep and in the morning I tried to switch on
The TV only sawing the blue light for power but not going on
What must I do?

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An LED TV is still an LCD TV, just with LED backlighting. That model is an LCD TV. The difference is in the backlight. Both LED and LCD TVs use an LCD screen. LED TVs have LED backlighting of the LCD screen, which saves energy.

I have a UA40EH5000M samsung led tv. Suddenly the screen went blank. only sound is there, no display. Which part may have the problem..please suggest..

The set has an internal fault and needs to be serviced

The flashing green light is likely indicative of a self-test failure, indicating the TV has detected some sort of internal fault. With no picture or sound, one strong suspect is the power supply. Flat-panel TV's have an internal DC power supply that converts the inbound AC current, and when these fail, or are unable to supply a minimum level of power to the set, it can behave as you describe, providing only enough power for the green light to illuminate.

I HAD A REPAIR GUY OUT TODAY AND HE SAID IT WAS THE POWER MODULE. I HAVE NOT GOT A PRICE FOR THE PART OR REPAIR YET.

JASONCBFAN