Chosen Solution
I have a Hisense 58H6550E smart TV, and about a week ago the screen went black. Originally, when I unplugged it and plugged it back in, the red light would come on, and once I pressed the power button the red light would turn off and stay off. If I pressed the power button again it would remain off until I unplugged it again and plugged it back in. I saw on a forum that this might mean the main board was bad, so I purchased a new main board and installed it, and now the problem is slightly different. Now when I plug it in, the red light still comes on, but when I press the power button the red light goes off for 3 seconds and then comes back on. There is still zero picture and zero audio. I’m not sure if this means the new main board I purchased is also defective, or if the issue is something else entirely. Does this sound like it’s actually a main board issue? And if it might be something else, what steps could I take to diagnose the issue?
@Scott Sterner Usually it is not a good idea to unplug or plug in HDMI cables with the device(s) at either end, still turned on or even powered on as this can damage the HDMI controller in the device. Having said that faulty HDMI controllers shouldn’t prevent the TV from starting either unless it also managed to damage the power feed which supplies the controller but which also “may”, (stress may only as I don’t know the TV) feed other circuits as well. It may well be that you have what is known as a “double header” i.e. 2 faults. One in the mainboard and one in the power board. This is only a guess on my part but since you have replaced the mainboard depending on the cost maybe try changing the power board and check. Try to find a supplier that accepts returns in case it isn’t the problem. if it does work then you won’t know whether it was only the power board or both but it may not be wise to try the old mainboard again in case it now damages the replacement power board because it was also faulty
I have the exact TV with the same exact problem: Red power LED lights up but no image. Press on led power button, it blinks then it comes back but no image. I can see the HISENSE dimly lit if I use a flashlight. I bought the LED strips from www.shopjimmy.com and I tried the the fix as shown here and IT WORKED! https://youtu.be/rcZh_HflXQc It looks a lot worse than what it is. I did buy the suction cups from shopjimmy.com as well (even though the guy in the video didn’t like them) because it was convenient. I was just really careful with that. It would be a good idea to have someone help when removing the screen. Otherwise, this is a one-man job. I don’t have any experience doing this but I do like to tinker with stuff, and I was able to do this in about 2 hours. Hope it helps!
My roku flat screen tv the red. Light turn on but black screen is still on no pic
I have a 65 in hisense roku that just randomly won’t cut on the red light will come on at the bottom of the tv and blink about 6 or 7 times after hitting power button but it doesn’t cut on . No sound no picture. I looked in the back everything looks good as in what the eyes could see . But only have had the tv for 2 years bought new. I really dont want to throw it out so anyone know how I could fix it or somewhere to fix if it not so costly thanks .
same thing has happen to my tv the power button comes on red but no pix and sound but i found out tht it is the lights on the tv tht is gone but to fix it is 2800r which is too much can u send tht video where we can do it our slef please
