M9 MESA BOOGIE carbine in thermal shutdown—Oh No!

Jim Carr · #1 08-29-2010, 09:48 PM

Oh Yes! Repeatedly....

I had it happen tonight at rehearsal. M9 into 410 Epifani 4 ohm cabinet--changed out the speaker cable, instrument cable, power cable, and bass guitar. Still shutting down! LIKE 20 TIMES, WITH 3 SECOND PAUSES.

Gain at 1 pm, master at 9:30. Instruments both passive, RW Jazz and MTD passive Kingston 5er.

I AM SO mad!!!!!

R Baer · #2 08-29-2010, 10:16 PM

Is the fan still working?

MIJ-VI · #3 08-29-2010, 10:50 PM

Clogged vents? How old is the amp?

Jim Carr · #4 08-29-2010, 10:51 PM

Quote:

Originally Posted by R Baer

Is the fan still working?

Fan is vigorous. Nothing clogged.
Amp is about 6 months old, I think. I will check the age...is there a revision dealing with this???

@Chef/anyone—is there an issue with racks/rack bags?

Edit added the next day:

Quote:

I am answering myself in case this helps others. Amp is actually one of the first 40 or so built. Yes, there is a thermal update available for those still under warranty. There is an issue with 2-space rack bags. Later iterations of the manual noted that you need a rack space above and one below--my January 2009 manual didn't have this warning.

MIJ-VI · #5 08-29-2010, 10:58 PM

The amp was in a rack when it was shutting down?

If so, did you try it outside of the rack?

Jim Carr · #6 08-29-2010, 10:58 PM

I am such a cry baby tonight!! Wahhhhh...

This amp was my tone/power ideal. If it is not 100% reliable like my old SWR 350, my Crest CA6 or even my GB Shuttle 6.0, then I am going to be one seriously unhappy customer...

OK, OK, I must calm down....but this is the piece of my rig I was counting on to measure up.
I guess I was (once again) just a romantic fool.

Mesa Boogie will be recieving a return as soon as I can get it to them.

Jim Carr · #7 08-29-2010, 11:01 PM

Quote:

Originally Posted by MIJ-VI

The amp was in a rack when it was shutting down?

If so, did you try it outside of the rack?

Yes, it was in a Gator 2 space rack bag. No, I did not take it out, as I was in a busy rehearsal and had already derailed things to change out everything except the cab and the head.

Everything, including the bass.

MIJ-VI · #8 08-29-2010, 11:05 PM

Quote:

Originally Posted by Jim Carr

Yes, it was in a Gator 2 space rack bag. No, I did not take it out, as I was in a busy rehearsal and a had already derailed things to change out everything except the cab and the head.

From the manual:

"...To insure proper ventilation always make sure there is at minimum four inches (101.6mm) of space behind the rear of the apparatus. The ventilation should not be impeded by covering the ventilation openings with items, such as newspa- pers, tablecloths, curtains, etc. Do not impede ventilation by placing objects on top of the apparatus which extend past the rear edge of its cabinet..."

Does your amp's rack satisfy these requirements?

Jim Carr · #9 08-29-2010, 11:07 PM

Update—there was no interruption of power. There were no temperature extremes, and in fact, I had each of the members of my trio touch the front and back of the amp. It was warm, but not hot anywhere on the back or front.

Jim Carr · #10 08-29-2010, 11:08 PM

Quote:

Originally Posted by MIJ-VI

From the manual:

"...To insure proper ventilation always make sure there is at minimum four inches (101.6mm) of space behind the rear of the apparatus. The ventilation should not be impeded by covering the ventilation openings with items, such as newspa- pers, tablecloths, curtains, etc. Do not impede ventilation by placing objects on top of the apparatus which extend past the rear edge of its cabinet..."

Does your amp's rack satisfy these requirements?

Yes, it does meet those requirements. It is a Gator 2 space rack bag. No obstructions are offered to the front or back of the unit. And yes, I did a lot of RTFM.

Jim Carr · #11 08-29-2010, 11:10 PM

Here is the other horror. I smelled hot solder/insulation just before the first shutdown—ACK!
But only once, and no one else did (we have engineers in the band).

Jim Carr · #12 08-29-2010, 11:12 PM

So now, I am a big whiner....

MIJ-VI · #13 08-29-2010, 11:14 PM

Quote:

Originally Posted by Jim Carr

Yes, it does meet those requirements. It is a Gator 2 space rack bag. No obstructions are offered to the front or back of the unit. And yes, I did a lot of RTFM.

A Google search of 'M9 MESA BOOGIE carbine, thermal shutdown' has turned up no other similar links.

Was the amp actually hot to the touch when it was shutting down?

Do you think a low voltage condition could have been a contributing factor? Was anything else plugged into the same circuit?

MIJ-VI · #14 08-29-2010, 11:18 PM

"Please direct product inquiries and Tech support questions to the factory in Petaluma :

US Domestic Support: (707) 778-6565"

http://www.mesaboogie.com/US/info.html

jazzblade · #15 08-29-2010, 11:26 PM

Quote:

Originally Posted by Jim Carr

So now, I am a big whiner....

Its ok Jim, I'm right down the road from them,Want me to take a bat???

Just Kidding they will treat you right, it is amazing gear!

Jim Carr · #16 08-29-2010, 11:26 PM

Thank you so much for your response and wise/cool-headed questions!

Quote:

Originally Posted by MIJ-VI

A Google search of 'M9 MESA BOOGIE carbine, thermal shutdown' has turned up no other similar links.

Yikes, but maybe that is a good thing??

Quote:

Originally Posted by MIJ-VI

Was the amp actually hot to the touch when it was shutting down?

No. It was never really hot, and I know from my SWR 350, CA6, and Marshall/Fender tube days, that a normal heavy load is warm, but not "ouch" to the touch anywhere on the chassis.

Even near the AC/power supply, it was warm, but not so hot that you couldn't just leave your hand there the whole time.

Quote:

Originally Posted by MIJ-VI

Do you think a low voltage condition could have been a contributing factor? Was anything else plugged into the same circuit?

Actually, this is possible. It was a suburban home in Dallas, and the drummer reported that he saw the bathroom lights "Sag" in brightness while I was playing. I checked this and did not see it. Drat, another unknown!

Jim Carr · #17 08-29-2010, 11:31 PM

Quote:

Originally Posted by jazzblade

Its ok Jim, I'm right down the road from them,Want me to take a bat???

Just Kidding they will treat you right, it is amazing gear!

I am clinging to my Mesa Boogie faith with all 9 fingers--and a thumb!!!

MIJ-VI · #18 08-29-2010, 11:32 PM

Quote:

Originally Posted by Jim Carr

Thank you so much for your response and wise/cool-headed questions!

Yikes, but maybe that is a good thing??

No. It was never really hot, and I know from my SWR 350, CA6, and Marshall/Fender tube days, that a normal heavy load is warm, but not "ouch" to the touch anywhere on the chassis.

Even near the AC/power supply, it was warm, but not so hot that you couldn't just leave your hand there the whole time.

Actually, this is possible. It was a suburban home in Dallas, and the drummer reported that he saw the bathroom lights "Sag" in brightness while I was playing. I checked this and did not see it. Drat, another unknown!

Chef didn't name the M9 per se, but...

Mesa/Boogie Official Club Thread

MIJ-VI · #19 08-29-2010, 11:34 PM

Hmm... The M9 draws 10 amps.

Jim Carr · #20 08-29-2010, 11:37 PM

Quote:

Originally Posted by MIJ-VI

Chef didn't name the M9 per se, but...

Mesa/Boogie Official Club Thread

Dude! You are the MASTER. Wow. Thank you. At least I feel as though if Chef has had this, then I am not alone.

Meanwhile, I want to take names and good-naturedly, "kick heinnie."

Yes, Life is good.