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I've noticed that my Mark V 90 has developed a bit of a hum in channel 3, only in 45 and 90 watt modes. And only when the rear panel triode/pentode switch for channel 3 is in triode mode. 10 watt mode has no hum, and no power mode hums in either channels 1 or 2. Neither does tube/diode...

Location: Melbourne, FL. For sale: Mesa/Boogie Mark V:90 combo with matching Mesa 1x12 half back extension cabinet. Both cabinets are quilted maple, with wicker cane grilles. There is a SLIGHT color mismatch between the two cabinets. Grilles look like a perfect match. Edge piping IS...

What should be the effects loop gain on the Mark V 90 with the FX drive level centered? I'm asking because it's way low compared to loop bypassed on mine.

I've got too many amps. It's taken me this long to get around to comparing my straight 60 watt Mark IIB to my other Mark amps. And found, that with the same EQ settings (via EQ in the loop) and with the same cabinet, that this amp, while it has PLENTY of gain, has a very bassy tone overall...

So my Mark III blue stripe long head (My favorite amp EVER!!!) went weird some time ago, but not TOO weird, I was able to live with it and still get my tone out of it, or at least MOST of that tone. I figured I'd put it on the bench and check it out when I got good and ready to. Symptoms...

I've noticed that the wet/dry ratio in the FX loops of my Mark V vs. my Mark III seem to be different. The Mark V's loop is much wetter. Is it supposed to be like that? I was under the impression that the loop on any Mark series amp is always a straight series affair, without any wet/dry mix...

I want to add reverb to my Mark IIB Super 60. (Straight 60 watter) I'm guessing it's been done before. My idea is to add the reverb tube in its correct original socket space (on amps equipped with reverb) and point to point wire it into the amp. I might even consider making a small...

Just a short note here. My recently acquired hardwood combo Mark IIB is in need of a recap job. One of the 220 uF caps has vented. Interestingly, the amp runs perfectly, no hum, no weird noises, nothing. You'd never know that it has vented caps by the way it's running. Of course I'm not...

Simple question. Are Mark IIs voiced differently according to whether or not they have the optional EQ? If so, what are the differences? Same question applies to Mark IIIs.

Anybody got a spare Mesa original Reverb/EQ footswitch for a Mark III you want to part with?

OK, I've actually had this amp for about a week now. Blue Angel 1x12 combo, bought it and had it shipped from Nashville to me down here in FL. I'd been wanting one since they were pretty new and still in production but didn't have the money for one at the time. So I've been watching and...

Just in case someone has a gutted old parted out Princeton chassis (reverb version) kicking around, I'm looking for one. Why? Because if I had that as a base to start from I'd build a replica of a Randall Smith Prune Music modded Princeton, the ORIGINAL Boogie, just for the fun of it.

Back when the Blue Angel was a pretty new model, I got to spend an evening with one and a semi-hollowbody guitar of my own making. The combination was truly memorable. I said, someday I'll have that amp or one like it. I missed my chance to buy that particular one but I've been biding my...

So I found a blue stripe long head Mark III...one of my dream amps! But it had an encounter with a technician who really loves adjustable bias. He never really "got" Mesa's fixed bias/selected matched tube pairs thing. So it is my task to restore the bias circuit to factory stock. It'd be...

So I've been searching for a Mark III Blue Stripe, long head preferred, for some time....and it turns out that one of my friends who's an amp collector just happens to have one and it's not working right. :cool: So we work out a trade agreement, subject to my being able to fix it. He brings...

Withdrawn. Made a local deal, got a Mark III Blue Stripe long amp and kept the Mark V as well. Consider this possibility: I have a perfect, mint condition Mark V 90 head, still has the original inspection tag on the handle, with footswitch, and I'm considering trading it straight even for a...

I should know this....the Mark IIB effects loop switching is a simple on-off footswitch, just two conductors, tip and sleeve, right? By default, with no plug in the footswitch jack on the underside of the chassis, is the loop on or off? In that mode, does it switch on and off according to...

I have an idea for a project that fits with my skillset. But to get started, I would ideally need to get my hands on a Mark IIC or Mark III front panel in good condition. I'll settle for a high resolution scan instead. If anyone has their Mark apart and can lay the front panel on a...

I was just checking Mesa's site looking at cabinets and amps and options for them and I'm not seeing anything about custom hardwood cabinets and finishes anymore. Did they stop doing that? I just got a Mark V 90 head and I would like it in a hardwood headshell. I'd consider one from Mesa if...

I just picked up a beautiful Mark IIB straight 60 in a hardwood cabinet with wicker cane grille, AND it came with a road case, and want to retrofit reverb to it. Has this been done either in the aftermarket or as a retrofit done by Mesa? I can almost certainly do it myself. But if anybody...