Welcome To the Hoffman Amplifiers Forum

September 08, 2025, 05:31:07 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Gibson GA-30RVT Power Switch Wiring  (Read 1893 times)

0 Members and 1 Guest are viewing this topic.

Offline guitarrock04

  • Level 1
  • *
  • Posts: 11
  • I love Tube amps
Hoffman Amps Forum image
Gibson GA-30RVT Power Switch Wiring
« on: August 05, 2015, 10:18:55 pm »
I'm hoping a fellow member can help with photos of original power switch wiring for a GA-30RVT. I went so far as to take 'before' photos so I could get everything back together the way it was. Things have sat around long enough, I've completely forgotten, and managed to lose the photos I had taken of the chassis. I'm struggling to make heads or tails of the lugs on the switch, and it does not match up with the schematic. Not sure what I'm missing, but I've spent too much time trying to sort it out and would appreciate any reference pics that someone might be able to provide.

Thanks in advance

GR04

Offline sluckey

  • Level 5
  • *******
  • Posts: 5075
    • Sluckey Amps
Hoffman Amps Forum image
Re: Gibson GA-30RVT Power Switch Wiring
« Reply #1 on: August 05, 2015, 10:29:01 pm »
Show us some good pics of the switch.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline guitarrock04

  • Level 1
  • *
  • Posts: 11
  • I love Tube amps
Hoffman Amps Forum image
Re: Gibson GA-30RVT Power Switch Wiring
« Reply #2 on: August 06, 2015, 06:27:17 pm »
Current photos attached. I believe the loose small gauge black wire goes to the fuse holder, along with one leg of the PT primary. I'm hung up on where the other PT leg is supposed to connect. The schematic shows it as tied to the same point as the two indicator light leads, but that just shorts when the switch is closed.

Any help appreciated

Offline guitarrock04

  • Level 1
  • *
  • Posts: 11
  • I love Tube amps
Hoffman Amps Forum image
Re: Gibson GA-30RVT Power Switch Wiring
« Reply #3 on: August 06, 2015, 06:28:20 pm »
With switch pulled out for a better view

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program