Oh that happened to me. I had to get the DC-In/power jack repaired.
If your one is the A1A version of well.. I had the
T4220, then all it involves is replacing that part which would have cost me $120aud since i was out of warranty, but since i cracked the case in that corner too it was $289.
Apparently its a common problem of Fujitsu laptops.
And ^ yea right as if. Fujitsu doesn't admit to its builds being crap in this area.
If its another version then that might affect the motherboard