Thank you for that. I've looked up on Google and didn't run across this discussion.
I was actually surprised by that, I though those issues are a thing of the past with the silicon they use for OLED display nowadays. I can understand it happening on older technology where the device characteristics would shift with the continuous current through it, but I didn't realize it will happen on this display. Especially given the fact it was only lightly used and was always kept at the low setting for the display.
So reading that thread, and the one linked within it, I see there's basically nothing to do except for throwing it out or hoping Agilent will be willing to offer a replacement with an LCD screen for a reasonable price?