Sony G90 Error code 88 - Is the YA board & Dallas chip dead?

So I've had my beautiful Sony G90 safely esconced in my basement since I got it from Nashou  (a couple years ago? not sure anymore). I've done the same as him and had it plugged in and in standby since having it, and only fired it up once to make sure it still worked after moving it, which it worked perfectly.

Yesterday I walked past it and saw the code display on the rear say "88", I flipped the main power rocker off, let it sit for a few seconds, flipped it back on, and it went back into normal standby. Today, it has the same issue, only this time I just flipped it off, since I had an odd feeling this wasn't good. I did the ole google search and came up with the results from "the other site" indicating this is the infamous YA Board failure, which was the odd feeling I had!

So I haven't used it since this has happened, I don't want to ruin the projector, I haven't even gotten a chance to enjoy it yet... Is this repairable at all, or do I have to replace the YA board? I'll admit I've never really paid any attention to any of the G90 stuff because I never owned one, and even after getting this one, didn't really worry about it too much... (yeah my bad I know)

So what's the scoop CRT master Guru's?