Hmmm, I saw this ad:
[quote]Marshall 100 Watt Head. Model# G100R CD. Works fine and sounds great. Has some wear and tear on it, but not in bad shape. Features 2 clean channels and 2 distortion channels, footswitch input, effects loop, and line out. Perfect for any style of music. $150 obo. Must Sell! Call anytime. Call: 352-328-4277 or E-mail

[/quote]

and that’s not a lot of money. What I do know is that Marshall’s British telephone people are much better regarded than the US side. Have you tried marshallamps.com, and with what success?

Merry Christmas to you too, Lee 😆 . If the valve-sniffers (like me) won’t help, the AX84 site might turn up trumps. If not a schem, at least some useful advice. Keep in touch if you hit a brick wall.

I spent an hour looking for this schem yesterday, and got nowhere.
Problem is i think its one of those newer solid state type amps, the Vintage crew dont touch them, The valve sniffers just scoff at it, and the people that actualy make the amp dont give a s**t about after sales.
i think he’s on a bit of a loser.

Backwards cap? Ouch 😥 . Here are some useful links, but come back to me here if you can’t find what you need,
1BL

http://www.lynx.bc.ca/~jc/marshallAmps.html
for Marshall amps history and schems

http://ax84.com/bbs/
ultra-hot uber-experts of all things valvey

http://vintageamps.com/plexiboard/viewforum.php?f=1&sid=938c45ae312f548072ee1cefe53cbe52
the Marshall category of the vintage amps forum. If you register and post your Q, I guarantee you’ll get more info than you can cope with.