Lines disappear mostly if the tv is switched off for about 15 seconds and start popping slowly and spread all over in few minutes. Is it a motherboard or t-con board problem? The problem was caused by a power surge.

Bud Martin

• 11361 Answers
• Posted on Jun 29, 2010

SOURCE: tv will not start after power surge

Voltage checking and caps inspection will be the first thing to do.
If you can post the pictures, that will help a lot. Look at the inverter board to see if you are getting 12~18vdc feeding it, also look for caps with leaking/bulging top.
See some pictures here:
http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Testimonial: "Example pictures quite helpful. I do some more visual checks and then post pictures of my power supply and ask for test locations. Thanks"

SOURCE: turn on picture and sound are great. for about 60

The tv have a long board call a LCD inverter board.This long LCD inverter board is dead.That why,the tv have picture only flashes like a min. than,died and have sound left only.The LCD long inverter board help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish long LCD inverter board for the replacement.

Testimonial: "I will order this part and install it. Thank you mark"

Loretta Northcutt

• 736 Answers
• Posted on Feb 05, 2011

SOURCE: I have Samsung UN46B8000XFXZA LED TV. After power

Yes based on your testing it appears that the power supply is at fault solely and you can opt to attempt a repair or replace it altogether. Unfortunately you will not be certain that the main board does not also need to be replaced until you have repaired the power supply.