Posted this same question in my PB 170 thread under the Powerbooks forum. At the risk of seeming impatient, I thought I'd ask here as there seems to be more eyes. Would running the 170 on a 12v/2A instead of 7.5v/2A damage it?

It ran for a total of less than 10 minutes in 2-4 minutes sessions. The hard drive has stopped spinning up. Otherwise everything seems to be okay (boots from floppy even). The HD was pretty loud when it first started, so it may have already been on its way out.