1) Then you need an ESD wrist strap, and the HMM.Electro Static Discharge wrist strap. Make sure it's alligator clip is attached to a good ground source.Average cost is around $3 to $6.Here is but one example,
http://www.radioshack.com/product/index.jsp?productId=2103245Don't wear one, and you can Static shock your laptop, and turn it into an expensive doorstop.I connect to an unpainted surface, of the metal frame of an open, empty computer case. I feel an Anti-Static Mat is unwarranted.You can connect to a large metal serving tray, (Unpainted, and set it on the table you're working on.Or perhaps a large metal knickknack. (Unpainted)Hardware Maintenance Manual,
http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-67760The Service Manual.Under the heading - Name, click on the blue ->Hardware Maintenance Manual (42x3547_05.pdf and 6.43MB, is underneath it)In the Bookmarks menu on the left, click on the + sign to the left of -Removing and replacing a FRU. (Field Replacement Unit)Scroll the inner blue sidebar way down, then click right on -1190 System board, PC Card/Express Card slots assembly or PCUse a multi-compartment container for the various screws you will remove.Label each compartment for the area the screw/s come out of.SOME screws look VERY similar to other screws.Advise DO NOT mix them up.Pictorial disassembly guide,
http://www.insidemylaptop.com/replace-cooling-fan-lenovo-thinkpad-t61-laptop/Added info,
http://www.notebookreview.com/default.asp?newsID=4637Now, if I may ask; why do you think the motherboard needs to be replaced?Post back in a Comment.Regards,joecoolvette