I have the Pioneer AVH-P4000DVD...installed it in 2008. I still have it 14 years later and for the past few years, the screen has been dying (it's flashing, at first it was intermittent a few years ago...now it's really bad and goes blank a lot). I'm guessing the AVH-P4000DVD LCD backlight is dying but don't know for sure...does anyone who installed one of these experience the same issue? Can we buy a replacement backlight?