The Boogie Board

Not to sound like a pat answer, but give Mesa a call. They are excellent with help for things like this.

May sound weird, but I get a decent blues tone when I max channel 1's gain, lower the bass and add a bit of mids. This is with a SG (for what it's worth).

I have not had that issue with mine.

Does it exhibit the same behavior when you change wattage?

I started playing in the late 60s. I was 14 or 15 at the time.

One thing you may want to try is running a patch cable for your effects loop. In the TA-30, the effects loop must be engaged in order to use the reverb. I wonder if the issue may be in that part of the amp.

I tried the reverb on mine. On the red channel, no matter the mode or wattage on mine, I can crank the reverb ... and I get none of the feedback you describe. You might want to give Mesa a call and describe it to them. I have called them in the past and they have been extremely helpful in diagnosing...

Mine is in the TA30-0028xx serial number series.

Again, sorry about the delay in getting back to you.

We didn't have practice last night. I will have to get it for you on Sunday. Sorry.

I think the problems were more associated with the earlier production models. I bought mine used and have had no issues with the loop. If you want, I can get the serial number range for mine. But, it will have to be after the weekend - mine is at church right now. The only "issue" I have had is some...

I bought an S.O.B. back when they first came out. So, my memory may not be all that well. The limit control was kind of weird. I left it on 0 most of the time. If I recall, it's purpose was to starve the PI (Phase-Inverter). At 0, it doesn't do anything. As you turn it up, it starves the PI more and...

ShredPowLines wrote: ↑

Tue Apr 30, 2019 10:43 pm

Update:

I contacted Mesa directly and they said it’s be another few years before I should be worried about replacing caps. Said boogies from the 80’s are starting to come in for cap replacements but hey haven’t seen many of any mark iv’s sent in for cap replacements

Good to know. Thanks.

It really is a great amp. It definitely is. Once you understand the amp, you can get a whole host of sounds out of it. Lately I have been using my LP's bridge pickup into my Mark IV's channel 1, with the preamp gain maxed. Some very nice, chewy, mildly over-driven tones. Some very good bite to it. ...

Thanks!

Perhaps I missed the memo ... but the screen format seems to be different. Plus, the option to jump to the "next topic" is no longer available.

Did I in fact miss something? Or, is there a setting I have somehow messed up?

Anyone else experiencing this?

Hi group, I want to follow up and report back on what happened with my Mark IV and also thank everyone who participated in the thread. I did contact the factory and sent my Mark IV chassis in for repair. The damage was caused by leaked capacitors. Although they were not able to repair it, they were...