new 5:25 user tube problem

[audiotaxi]

Hi all
new to the board (and Mesa)

just got a brand new 5:25, and at first practice was loving it, until a couple of hours in, it started losing power and farting. I discovered a red plating power tube. Oh well, these things happen..

When I went back to the store today, they only had yellow grade EL84s , as opposed to the white that was stock.
Can I use these with no harm? I have read that you are supposed to switch like for like.

Have called Mesa support, but no call back. Not a good start, but any advise from you guys would be appreciated. :wink:

 

[MrMarkIII]

Just buy two Yellow and keep the one good White as a spare.
It's OK to mix in a pinch, it won't kill your amp. It just might not be optimum and may not sound as good, although there's a thread somewhere of someone who liked the mis-match.

 

[FXR]

Mesa will follow up with you. Use your serial number when you call. They are really on top of stuff as far as communication in service.

My Express 5:25 is at the factory being looked at for a very similar complaint. I expect the repairs to be as solid as the rest of the transaction, so expectations are high. From reading around the net though, I'm optimistic on the repair.

 

[J.J]

You can use any of the colour grades. They will all work fine. My Express came with Yellows and and it now has Blues as that is what I was given when I asked the shop for replacements.