Recent content by John Platko

Thanks for the help folks. GC seems to have a sale on Mesa EL84s so I think I'll pick up some of those when I get a chance to get there. For some crazy reason it costs a silly amount to ship them. The people at GC blamed Mesaboogie for that. I called Mesa and they told me the pairing. Outside...

It's power tube replacement time for my Maverick. Do I need to use Mesa boogie tubes? Will two sets of matched pairs work or do I need a quad set? Any other advice would be appreciated.

Maverick.

Why does the Marverick need all power tubes replaced at once? I got the preamp cover back on with no problems. If you know how it works it's not so bad of a design. Of course, I woudn't think that if the plastic clips broke. The nasty microphonic seems gone for now. I think the combination of...

I think you're right. As I was poking around I noticed that one of the EL-84s wasn't sitting straight in its socket. It was partially out. I pushed it back and that seemed to help, although I could still hear the occasional microphonic. Then I got a stick and tapped all the tubes. I didn't get...

I got the preamp cover off today. It actually worked ok once I had a better idea of what I was trying to do. Thanks folks. I tried swapping V2 out but it didn't change the problem. Then I tried swapping V3 out, it didn't change the problem either. I assume the tubes are numbered in order...

Thanks I'll give that a try. It seems that it takes a fair amount of force to get the cover off, is that right? The amp isn't microphonic all of the time. It seems to be sensitave to the note being played. Around E2 is the problem. Also, it seems to need to warm up a bit before it shows up...

I tried pushing the tips but that didn't do anything. Maybe I need to push harder but I don't understand how this is supposed to work. It looks like I'll have to call Mesa Boogie on Monday, hopefully they can walk me through it.

Hmmm. So it's the actual tips that I should be pressing on, not the plastic piece that looks like it snaps onto to the side of the metal. Thanks, that should help some. Is it hard to get the tubes out once I can get a hold of them? And while I'm learning about this. How do I remove the metal...

I thought I'd give Mesa Boogie a call and see if they can help me get the preamp tube cover off. Turns out they only work Mon. through Thrusday - that can't be good. Still looking for tips on how it comes off. John

Thanks! It sounds like V2 is the place to start. I have a 12AX7A that I took out of an old Hafler preamp that I could try for starters. Are there instructions on the web for how to go about doing this? How does one remove the preamp cover? It looks like it's being held on by some plastic...

It sounds like my Maverick has developed a microphonic tube in the lead channel. An E3 note played anywhere seems to cause the trouble. Other notes seem fine. The rhythm channel, which is what I usually use, sounds just fine. Which tubes should I check first? John

I keep it mostly on the clean channel, when I want distortion I can get as much as I need there. The lead channel never grabbed me in the same way. The amp is stock and I'll probably leave it that way. Does anyone have any great lead channel settings? Is there a Maverick setting list on the forum?

No, I ordered it this way sometime back around 96 or so. I think they called it saddle tan leather. I don't think they use it anymore.

I've been lurking around the forum for a while and enjoying all the great info. I thought you folks might like to see few pictures of my custom Maverick.