PRS MT-15 stuck at max volume

[Rotornator]

Hey guys, I recently connected a tube screamer to my pedalboard and for some reason my amp went to max volume and I can’t change it. I’ve tried lowering the volume knob on my guitar, disconnected the tube screamer and plugged my guitar straight into the amp with no pedalboard but it is still stuck at max volume. I turn the volume knob on the amp and no response. Someone please help!!

 

[Alnus Rubra]

If you’re the owner from new, I think this is something that your dealer needs to sort.

 

[Dirty_Boogie]

If you’re the owner from new, I think this is something that your dealer needs to sort.

And then go to an audiologist and get your hearing checked. Wouldn’t want to be in the same room as an MT-15 at full volume!

 

[Rotornator]

Yeah, it scared the hell out of me! I unplugged the amp and plugged it back in and still the same. Has anyone even heard of anything this crazy before?

 

[Dirty_Boogie]

Yeah, it scared the hell out of me! I unplugged the amp and plugged it back in and still the same. Has anyone even heard of anything this crazy before?

One possibility is that the master volume pot is bad, or has a faulty solder joint. I build pedals, and this happened to me once - huge amount of output with the vol pot doing nothing. Basically, if there's a faulty variable resistor (volume pot), nothing gets dumped to ground as you turn the knob, and the full signal goes through to the output. I haven't seen an MT-15 schematic, so can't be sure, but I would have someone start there.

 

[Rotornator]

Thank you very much for insight guys! I just unplugged the power from the amp and plugged it back in. Now it’s working normally again. Very strange

 

[Alnus Rubra]

Great news. Maybe get it checked over, just to be sure it’s not going to do it again.

 

[DISTORT6]

Thank you very much for insight guys! I just unplugged the power from the amp and plugged it back in. Now it’s working normally again. Very strange

Ah, yes. The ol’ re-boot trick. Classic.
Actually, stuck on full-off would have been MUCH worse.

 

[Gtrbldr]

Did not know the MT 15 runs on windows98

 

[GuitarJammin]