Guitar Making and Repair/331 Schematics

Advertisement


Question
QUESTION: I just bought one, a 71, and it worked great for about a half an hour before the transformer burned up in what I believe is the original power supply. I have read it takes 18v AC which I should be able to find, if you tell me what I read was true. Also I believe I read that you have the schematics of the second generation circuit. It also came with a box of clear GE bulbs with just a number "19" stamp on the box any thoughts on how they were to be dyed? Any chance of getting those schematics? Any help will be greatly appreciated.
Steve

ANSWER: 18VAC is correct. The bulbs are the correct ones and can be colored using a craft store "stained glass" paint. Three colors are red, cyan, and green on type 2s.

I'll have to search my files for those schematics...

--Paul

---------- FOLLOW-UP ----------

QUESTION: Paul,
Thanks for the confirmation that the 331LS was 18vac I had an 18.5vac supply from an old Behringer 802 mixer (read the label, it's actually 18.5 x2 at 250milliamps each and a 3v with a strange plug) and it works fine. Would the promise of say a twenty five dollar donation increase the chances of your search for the schematics? I would like to keep this thing working as long as possible.
Steve

Answer
I'm not particularly money-motivated, but I am extremely busy these days and really just need to think about which computer or hard drive I placed the schematics on, and retrieve a copy.

So far I've been unable to find them...should have printed out a hard copy and filed it.

--Paul

Guitar Making and Repair

All Answers


Answers by Expert:


Ask Experts

Volunteer


paul wilczynski

Expertise

Anything concerning building, tuning, theory of construction. Specialist in finishing (40 years' experience); extensive knowledge of Rickenbacker instruments of all vintages. Rickenbacker factory connection on personal level; ONLY licensed Rickenbacker luthier in the world.

Experience

Extensive. I build and restore electric and acoustic guitars (steel string and nylon classicals). I build all of Rickenbacker's acoustic instruments in my own shops in San Francisco and Healdsburg, CA. I write two online columns with a total of over 15,000 posts since January, 2005. Google my name or my screen name, "jingle_jangle".

Organizations
American Guild of Luthiers.

Publications
Mostly automotive and hobby (in the past).

Education/Credentials
Manage the University Department workshops(Industrial Design) in SF, also have taught and written design and fabrication classes for almost a decade. Have produced online classes, written curricula, syllabi, etc. Run an online forum for my students (500 in number).

Awards and Honors
Awards won for product, vehicle, and preschool toy design in the past.

Past/Present Clients
Rickenbacker International Corporation, Waterstone Guitars LLC, many Fortune 500 companies before I worked in guitars (I ran a design studio for 22 years). I have hundreds of individual--private party--customers.

©2016 About.com. All rights reserved.