Gibson G 30

[Casparling1971]

My first amp was a 1970's Gibson G 30. I traded in in the late 80's for a Peavy Musician and speaker cab. The guy I traded it to tried to add speakers and blew the output transistors. He gave it back! My question is, where can I get a schematic with part numbers. I have the Gibson schematic, but it only has the transistor numbers. If anyone has a picture of the PCB from the top, please send it to me. found some other oddities inside. I just need a comparison.

Casparling

[DrGonz78]

There is a thread here that has the parts list in addition to the schematic. (last post)
http://music-electronics-forum.com/t40551/

Q2 is ER3055 (schematic) and would be equivalent to 2n3055. Q9 is 2n2147 on parts list and I think MJ2955 is a good replacement for that one.

Edit: Note that the parts list has parts house numbers to help identify which one is which.

Double edit: The 2n2147 is germanium, read the whole thread attached, and the amp will need to be modified to bias it correctly when switched to silicon transistors.

[Casparling1971]

Thank You, DrGonz78