I noticed on a selection of retro laptops there are screens that show some kind of screen rot. I'm not talking about vinegar syndrome where the front polarizing film is degrading and smells like vinegar but any sort of deeper screen rot. For instance like on this Thinkpad 760EL you can see a plague of dead pixels starting from the sides and I've seen this exact issue on plenty of old LCD TFT screens. What is interesting is the screen is completely clean or dead pixels are very subtle right after you turn it on but you start to see a load of dead pixels seconds after powering on. Sometimes it takes minutes on other screens. That tells me this problem can be potentially repairable.

Is there anything that can be done about it without trashing the screens and replacing them? Repairing old hardware is all about preservation what's left so that would be huge if anyone can come up with an idea to repair or rejuvenate old LCD screens that aren't cracked. That is if it is theoretically possible of course. New screens are getting harder to find and some models are unobtainium and again, what makes the most sense is preserving the original stuff as much as possible and constant workarounds can be a little senseless and you never know whether replacements also start to rot to begin with so you can get back to square 1.