Well, these are a few Fender Bandmaster schematics.

This is last winters' project. After lugging a '66 -'67 Bandmaster around with me for the last 25 years or so. I finally decided to do a major overhaul this past winter. The over haul involved new tubes, cleaning potentiometers, switches and wiring in a couple of resistors* to 1) give blow out protection 2) help with biasing the amp. I also recovered the amp and cabinet with Beige Tolex and new fabric, oh yeah I installed a set of EV Force loud speakers.

As with any project involving 40 year old electronics research is key. I was able to find several Fender Schematics all of which are either from the Fender web site or in the public domain. A point of interest is that Leo Fender sold the business to CBS around this time ('65 to '66). So you can see the schematics go from loosely drawn,i.e. open to interpretation to more standardized drawings. Also, my cabinet dates to '66 and the amp dates to January '67 a lot of the components date back to the early 60's. During this time a lot of electronic components were produced for the military and put into inventory for years.

Here's my Band Master next to my Mesa/Boogie MkIIB. I relied on Groove Tubes for matched 6L6's power tubes and I chose to go with preamp tubes that gave a slightly over driven signal. Matching the power tubes should eliminate the need for biasing.

I relied heavily on the schematics to determine where and what each tube did. This allowed me to make a better selection of tubes.

Ok, so here's the damage:

Orginal amp and cabinet in the late 70's dollars $275.00

EV Force load speakers in mid 80's dollars $300.00

Tolex, Grill Fabric, new hardware $150.00

New Tubes $180.00

Total $ 805.00 I think it was worth it. I was considering a new Fender reissue which runs from $800 to $1200 and I got exactly what I wanted and learned alot.