RCA 55" Screen flashes then shuts off.

[TankError144]

so I literally picked up a tv today and got home to plug it in and made sure it worked and it did, but as soon as I plugged in an HDMI cable from my laptop the screen would not power on.so I unplugged the HDMI and tried to turn the tv on again but no luck, then unplugged the tv and back in and also no luck, then I plugged the HDMI in and plugged in the tv and went into my display setting on my laptop and the tv showed up, but it wasn't on and if I unplugged the tv it dropped from the laptop. and now I'm here cause I can't figure it out. the tv in question is an RCA 55" Model No.: LED55R120Q Serial No.:3527-LE55C55-N104234.

[EarthWormJM2]

That is very strange being brand new, but sounds like it may have died as soon as you turned it on. Maybe something is wrong with it, maybe a power surge. Did anything work on it before? Can you see anything on the display? (i.e. other inputs, the menu, etc...)

[TankError144]

45 minutes ago, EarthWormJM2 said:

That is very strange being brand new, but sounds like it may have died as soon as you turned it on. Maybe something is wrong with it, maybe a power surge. Did anything work on it before? Can you see anything on the display? (i.e. other inputs, the menu, etc...)

It was not brand new, I just received it used, sorry I didn't make that clear before. I plugged in the HDMI, the screen came on the default blue screen saying "no signal". if I plug it in now with nothing attached the screen flashes for about a millisecond then shuts off. note that if I unplug the tv and plug it back in, the red power light comes on but after trying to turn on the tv it fades out after the screen flashes. and if I hit the power button again to "turn off" the tv the red light comes back on as if it is on standby, seems to be something to do with the screen itself or the control board, but is not sure.

Edited June 25, 2018 by TankError144

[EarthWormJM2]

I agree, it does sound like a board or display issue. Are there other inputs you can try? Does it have analog RCA connections you can try? Do you have a game console/cable box/other device you can connect to it and see if any of that displays? Those would be my suggestions to try. But it sounds like the board my be failing or something along those lines.

[TankError144]

2 hours ago, EarthWormJM2 said:

I agree, it does sound like a board or display issue. Are there other inputs you can try? Does it have analog RCA connections you can try? Do you have a game console/cable box/other device you can connect to it and see if any of that displays? Those would be my suggestions to try. But it sounds like the board my be failing or something along those lines.

So I think it has to be main board issue, cause I can't have the screen on so that I can test other inputs, I checked the TV and it's a 4 y/o model. It's very likely the min board dies, hopefully I can find a replacement or a compatible board. Thanks, I'll do some searching for a replacement because it'd be cheaper than buying a new TV.