Atari Lynx LCD Screen Dark Vertical bar Problem Fix

Good day,

I recently got an Atari Lynx handheld Model PAG-0200 The 1st large version. It works fine, sound, brightness and buttons are all functional & responsive and the screen view angle is fine.

But there is this irritating darker vertical bar / strip in the center of the screen in all brightness levels that I tried, as pictured in the screen-shots below.

Is this a case of faulty capacitors that need to be changed like we do in the common SEGA Game Gear LCD screen problems, or is it some other different issue and how exactly do I fix this?!

Thanks in advance.