There is a white vertical bar in my TV screen

Hi @nielalcover

A vertical white line is due to a driver gate IC being held permanently on.

The driver IC is in the screen itself so the screen will need to be replaced (if you can find a replacement that is) as it cannot be repaired.

Disconnect the power to the TV and then remove the back cover {see p.18 (17 of 52) in the service manual} and then remove the boards etc so that you can access the LCD panel to find the make and model number of the panel. Search online using the panel model information to find suppliers.

If you can't find any suppliers, an option to consider is to advertise the TV as LG 32LJ500U-ZB faulty screen- good for parts to try and recoup some of the cost towards a new TV. Working TV boards are always in demand.