Mark IVa cooling fan problem

Pre Recto days. Boogie modified Fenders, Mark I-IV, Dual Calibers, etc

Moderators: Guitarzan, Grandor, ned, Platypus

Post Reply
SgtPatton
Bottle Rocket
Posts: 18
Joined: Sat Feb 09, 2008 1:01 pm
Location: Finland

Mark IVa cooling fan problem

Post by SgtPatton » Sat Jul 10, 2010 3:14 am

I have a slight problem with my Mark IVa: When on full power, the amp's cooling fan is way too loud. I play mainly only at bedroom volume. When playing on tweed power, it's okay. I don't think it's broken in any way.

I've heard, that A-version has louder fan than later version. It's that true? Has anyone had similar problems? Can I just disconnect the cooling fan? Or can I upgrade it to more silent cooling fan. Which one do you recommend?
Mesa Boogie Mark IV (A) Medium Head
Mesa Boogie Mark V - head *SOLD*
Mesa Boogie Rectifier 4x12

+Bunch of expensive guitars

User avatar
Boogiebabies
Road King
Posts: 4568
Joined: Sun Jan 30, 2005 5:07 pm
Location: Korn's Bakery Brooklyn NY

Re: Mark IVa cooling fan problem

Post by Boogiebabies » Sat Jul 10, 2010 1:27 pm

I've had some that were as loud as a Piper Cub. You can rebuild the old Howard to make it quiet again,
but it's just easier to buy a new Globe Motors fan from Mesa. It's around $ 25.00 and is way quieter.

SgtPatton
Bottle Rocket
Posts: 18
Joined: Sat Feb 09, 2008 1:01 pm
Location: Finland

Re: Mark IVa cooling fan problem

Post by SgtPatton » Sun Jul 11, 2010 3:14 am

Thanks for the answer. Yes, it's the old Howard cooling fan, and it's about 20 years old now. So I think it would be better to just change it.

Do you know what would be the exact model, if I'd buy new Globe Motors cooling fan? Those are hard to find from here at Finland.
Mesa Boogie Mark IV (A) Medium Head
Mesa Boogie Mark V - head *SOLD*
Mesa Boogie Rectifier 4x12

+Bunch of expensive guitars

Post Reply