Newly purchased Mark V 25 problem

[flyingblade]

Hi guys,

I have just received my Mk V 25 for about more than a week from Sweetwater. Everything works fine and sweet but today when I was playing I suddenly notice a drop of volume then I immediately check the tubes and one power tube was glowing much hotter than the other (please see the pic). So I guess this is a powertube failure and I should replace it? Is there anything else I should know? Can I play it like this or it better if I leave the amp alone for now? What could cause this problem? I have never thought that tube problem would happen so soon after purchase. Now I need to wait 2 weeks for the tubes to arrive

Thanks guys

 

[Monstercastle]

Tubes do go bad. Even new tubes, and especially new production tubes. I keep spares. They are "consumables" anyway, like air filters or brake pads in a car. That said, contact Mesa and they will send you replacements. They are the best in the business in warranty and customer service. Call your Sweetwater Rep as well, and they will most likely send you a set. I purchase most of my gear through them for a reason.

 

[screamingdaisy]

+1 on tubes failing. Despite all the testing some just don't last. It's why Mesa offers a 6 month warranty on them.

 

[Lkdog]

+1 on Mesa customer service.
I bought my Mark V 25 used and had the warranty transferred from original owner.
Had a power tube go bad within the initial tube warranty period. Mesa shipped out a new pair right away.

 

[barryswanson]

Yeah I wouldn't run it like that.