Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Oddvar on January 08, 2019, 11:43:15 am

Title: IC for Mesa Mark IV
Post by: Oddvar on January 08, 2019, 11:43:15 am

I have a Mesa Mark IV I have changed all the IC's in the footswich, the switch works now, but I wonder if rhere is one inside the amp as well? And what kind is it?

Title: Re: IC for Mesa Mark IV
Post by: shooter on January 08, 2019, 11:50:43 am

here's the schematic;

https://el34world.com/charts/Schematics/files/Mesa_boogie/Boogie_mkiv.pdf