It's kind of hard to describe; especially since the monitor has been used by someone else for the last few months.
Basically though, the screen starts flickering a lot then goes dark. It comes back if I reboot but starts again within a few minutes. I put an older monitor on the machine and everything is working fine so it's definitely the 215TW.
I had it scheduled for an eWaste pickup this morning but I'm thinking of opening it up to see if there is anything obvious wrong before throwing it out.
It's really aggravating that it's just 3 months out of warranty -- especially when I could have used AMEX and gotten an extra year of coverage