I just purchased a used ze1115 which has both a bad battery AND a flaky power plug. I opened it up to do your mod and found that the power plug for the AC adapter was never soldered -- only crimped on, and the connections were iffy. A buddy who designs instrumentation for a living (and has a wonderful shop in his basement) soldered it on. This seems to have fixed the problem for me... Just in case, I preinstalled the wiring to solder to a new plug (in the event of failure) so I would not have to remove the entire motherboard again.

Just thought I would put my 2 cents in...

EBo --