55” Q80T Red Light Flashing Screen Won’t Turn On

[userDLYGCxBp6d]

When plugged in the light will flash a couple times fast, then once slowly, then the screen starts up black with a horizontal line towards the bottom, the line disappears, then the black screen turns off, repeat infinitely. 

I’ve done a reset(unplugged for every length of time then held power button, then plugged in held button 30/60 seconds). 
Changed outlets, changed power cord, even changed the entire power supply board inside the tv with another one, no difference.

I’ve had this $1200 tv for just over a year, not positive what to do next, I found once that checking each pin on each led strip for a short can cause the issue but I’m not really sure about that process and can’t find any resources.

Please someone help me if you would be so kind.

 

 

 

[gabe80million · Accepted solution]

It may be one of the motherboards faulting out. You can either get it repaired or buy a new one (unfortunately)

[userDLYGCxBp6d]

Any way to check which board? Maybe the one with the hdmi ports? I already did the power board so why not.

[gabe80million]

Just open the back and see I guess. Usually there's only 2 boards but there may be more. It could be worse than that but I think it may be the main board because of the way it's acting.

[gabe80million]

Basically yes the one with those ports

[userDLYGCxBp6d]

Ok ordering a main board now, thanks man, other option is the LED board. There’s no visible damage to any of the boards so looking doesn’t help. It’ll be here in a week then I’ll either order the LED board or cry and save up for another brand.

[gabe80million]

I can only assume you got unlucky or something. I hate fully taking apart a TV, last one I took apart I broke the glass and just bought a new one of the same brand. Lol but anyways good luck, it could potentially be that other board I really don't know