MK II C Mysteries

Mark I's, II's, III's and the almight IV

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Ronco
Bottle Rocket
Posts: 9
Joined: Sun May 11, 2008 11:37 am

MK II C Mysteries

Post by Ronco » Thu Sep 20, 2018 5:26 pm

I own a near mint MK II C ( NOT C+)
I have been trying to find a good schematic for the plain ole II C for YEARS.

Does anyone out there know where I can find a schematic for the II C ?

There are zillions of IIC+ schematics on the NET for the IIC+ but NONE ( that I can find ) for the IIC.
Hard to believe that Mesa manufactured over 1000 IIC and there is no schematic ??

Also would love to find good documentation/ drawings /schematic and notes on the famous Mike B conversion from IIC to IIC+

Any replies/ comments /info greatly appreciated !
Ronco

jrb32
Mark III
Posts: 173
Joined: Wed Jan 31, 2018 8:32 am

Re: MK II C Mysteries

Post by jrb32 » Fri Sep 21, 2018 5:35 am

No official one out there supposedly but chipaudette traced theirs:

https://get.google.com/albumarchive/109 ... MQIdPUFDaV

They then traced the follow up when Mike B upgraded it to IIC+

viewtopic.php?f=27&t=40649&start=0

Hope that helps!

jrb32
Mark III
Posts: 173
Joined: Wed Jan 31, 2018 8:32 am

Re: MK II C Mysteries

Post by jrb32 » Tue Dec 11, 2018 5:51 am

I bought an SRGX '83 IIC and traced it. Board view and schematic here:

Schematic: https://drive.google.com/open?id=1mpJFs ... 81rlggkt6M

Board view: https://drive.google.com/open?id=1Lx0Ao ... V5IgEUf5cS

I'll do the same for the IIC+ RP10 once I do the upgrade.

Cheers,

Jon

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