Got ya!Probably not. It needs alot of work. I pulled the heatsink off and all I saw was burnt original paste. Okay that solves the freezing issue.
It wouldn't start with the door closed and half the RAM doesn't show up. Reseating the RAM every start fixes it but unless you close the door ever so slowly it cuts out. I think it is a ground problem in the PSU snake to the 24 pin connector on the Logic Board. For a single 1.25 MDD I don't deem ordering parts worth it, especially since my daily driver is a G5 and a MBP.
If it was me and that was my QS I'd replace it, but that's just personal preference. I see logicboards for the QS on eBay for about $30 including shipping. That's half of what the 17" 1.0Ghz logicboards seem to be going for (which is what I am in need of currently).
I can't imagine the MDDs would be much more expensive. But if there is a fault in the PSU that needs to be fixed too as it will eventually burn the board out again I imagine. Ah well. Hope it was good to you!