Yep, mel. System board=Mainboard= probably more than the laptop cost new (used to do warranty repairs for Dell, and most of the field engineers report was just Change Mainboard when infact it was just a software conflict, a faulty battery, or unseated keyboard connector clip, or loose video card). If it was a mainboard they would often have a price quote if out of warranty, and it was something £8-900 just for the mobo. and this would be for a laptop that was over 3-5 years old.
BTW, I know how bad it is when the PC goes dead. Mine is still down. turns out it is probably the screen that is buggered (controller blew/burned out) and I'm having real trouble getting one that will work with a Toshiba LTM10C209A (209H or 210 all mechanically compatable). All the german places either say contact our distributors, or i'll get back to you. All the UK places say no problem, we'll ge tyou a price and I never hear of them again.
I've looked at
Both list as being compatable with the 18bit Toshiba. Kontron even gave me the kit numbers that needed to contact a distributor with, and they still won't get back to me. getting annoying.