Hi I have a book full of Fender Schematic's. I don't see a Model M-80. Is this a solid state amp or is it tube. I have the Bassman 70, if you give me the tube layout I'll see if I have anything that matches. If not you can get in touch with fender. They are in Scottsdale Ariz. Phone# 602-596-9690. Respectfuly Laura Lmusic77@xxxxxxx Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.