I have a 40" TCL TV with one black vertical line on the screen.

Hi Bruce, what's going on with you TCL set is one of the COF IC's on the panel boards is shorted, that's why it blew the power fuse on the tcon, a new fuse will blow and not fix it, don't order a new board as that won't help either, the set unfortunately isn't going to be fixable as a new panel won't be available and when they were a few yrs ago they run as much as a new set.

The T-con board is for the led backlights!

Are the backlights working? Sounds like yes even before changing the T-con board!

Did you do the flashlight test into the screen to see if there is a faint picture? I guess if you did you didn't see a picture!

This would point to the main board or the cable from the main board to the screen!

I hate to give you bad news but I believe this will be a panel issue and it's not going to be fixable. You can try a different tcon board but I don't think it will help

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ok go to menue if still you have this problem your panel is not good
but if this problem disappera then this the problem of your T-CON BOARD for falt cables that attached to T-CON board

Sorry but you have a bad panel. Repair cost is prohibitive. The T-con was a good choice, but is the last step to the panel.

The T'Con board fault can result this type of display error.

LOD (lines of death) are a known service issue with the Sony bravia line of TV's contact Sony and cross your fingers. Wish I had better news for you. I had a 52w4100 and Sony arranged me with a service center to get it taken care of.

This lines are in colors or black vertical lining in shaping?Yes?These lines are not causes by u or causes by an object by using forces hitting the LCD screen panel itself to causes these problems?Yes than the LCD screen panel are dying and leaking radiation can't be repair only by replacing new LCD screen panel not worth replacing and reparing if require a new LCD screen panel only.If these vertical lines are in colors or black are showing up and causes by the tv itself?Yes.Than the tv have a dying board that call the T-CON board and this board only job are docoding any pictures pixels before it showing up to the tv LCD screen panel.This T-CON board sit at the bottom in the middle of the tv LCD screen panel.Tries websites like Shopjmmy.com,Ebay.com to buy a refurbish T-CON board for the replacement.

Yes,this causes are bring it on by a board that call the T-CON board.This T-CON board it is slowly shorting out and slowly dying to bring these vertical lines up and showing up onto the tv LCD screen panel.This T-CON board jobs are to control and filter all the tv pictures pixels before it show up on the tv LCD screen panel.This T-CON board sit in the middle at the bottom of the tv LCD screen panel.Tries websites like Shopjimmy.com,Ebay.com to buy a new refurbish T-CON board for the replacement.