FYI:
My Sharp 6" page is back online now (it was down for several months while I changed my server to a new location), with schematics for making your own power supplies, etc.
http://www.m2pc.com/~jason
Most of the site is severely outdated but if you go into the "Electronics" section there is Sharp 6" LCD info.
Enjoy!
Jason
www.m2pc.com