Dead Pixels on OEM Navi headunit

Hey Everyone - Starting to notice some dead pixels on my OEM Navi headunit. I want to keep the OEM headunit. Anyone have tried to replace the LCD screen? Did you just end up replacing the whole headunit? What are the costs typically? I want to avoid an aftermarket headunit and keep it OEM. Thanks!

just spotted a used one on CL here: https://newjersey.craigslist.org/pts...171138810.html

might be worth a shot.....

There is a DIY somewhere on replacing the screen.

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Thank you!!