Re: Lg 60uf7300-ut

Hey I tried to unlock the Main board from the power supply. The led.s stay off. If i shine a light i dont see any video as well. There is a little reset switch on the main board, if i press that I see the lights come on for a brief second and tv shuts off. There is also a blinking light that flashes 5 times on the power board.

Re: Lg 60uf7300-ut

Hey did you end up figuring out what the issue is? i have the same problem with this tv, 5 flashes on the power board, no image or l.e.ds on or sound.

My suspect is the main board but dont want to spend 200+ dollars on the wrong part. Any help would be appreciated

Thanks!

Re: Samsung un55hu7250f no backlight, has picture and sound

Yes I double checked all the connectors to make sure! TV is doing good so far.

Thanks again for your tips and help!

Re: Samsung un55hu7250f no backlight, has picture and sound

Took apart the screen and found a loose connector on the top LEDs, you we're right!

Thanks for all your help, now i feel confident doing this in the future to any tv! ...

Re: Samsung un55hu7250f no backlight, has picture and sound

thanks for the quick reply, is there a way I can confirm this without taking panel apart? and how can we make sure its not actually the board not giving that voltage because its the same reading with led plugged in or not...

I have a curved 55' samsung UN55HU7250F with powerboard BN44-00781A, with no backlights coming on. I did the flashlight trick and I can see the menu etc and I hear sound. I removed back cover and disconnected Main board connector CNM803 and power back on but back lights still didnt come on. I did some voltage testing on the CNL802 connector with the L.e.ds connected and not connected and not sure if voltage is right or if i am doing the right test on some of the pins such as n.c? (see below)
At this point im hoping its the board that way I dont have to remove the curved glass and risk cracking...

Re: New Members - please post your introductions here

Hello All

Just an introduction, new to this forum. Name is Sam, I am a security technician by day.
Surveillance, alarms, etc. I joined the forum because my hobby is electronics, fixing tv's, computers etc. Puts a smile on my face everytime I see a device come back to life!