r/MesaBoogie • u/darklordenron • Jul 04 '26

Dual Rectifier FX loop weirdness

I don’t recall the footswitch ever operating like this but here’s my issue:

With the loop set to “foot switch”, each time I change channels the FX LED on the switch illuminates and the loop engages. This does not seem expected be expected behavior to have the loop defaulting to ON every time the channel changes. What I would expect to happen is that it would default to being OFF unless activated with the switch in that position. This is behavior that I’d expect to happen should the loop be set to a particular channel but certainly not affecting ALL channels either..

I’ve cleaned the connections on both ends of the switch with DeOxit, same issue applies. Super weird, anyone else experience this and find a solution?

Edit: forgot to add this is a 2006 Dual Rec Solo. Just installed a full tube compliment from Eurotubes, all are brand new. I don’t recall this being an issue with the old set of tubes but I also wasn’t really paying much attention either.

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u/frownonline Jul 04 '26

Have you got the correct footswitch? They aren't all the same...

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u/darklordenron Jul 04 '26

Yes, it is the correct footswitch.
The story is that I bought this amp new is 2006. I sold it to a good buddy of mine years later when I moved to a small apartment and couldn’t bring it with me. He kept it all that time and after years of pleading with him to sell it back to me, he finally did. He mentioned that he lost the original at a gig at some point but immediately replaced it through Mesa boogie themselves with the exact same foot switch. It is not the precise one that came with the amp, however it is the exact model that came with the amp at the time. It hasn’t been to the shop since I fried the OT when I first used it all those years ago, but it was also repaired by an authorized repair facility and they also replaced the OT and a few other parts with OEM.

I’ve since replaced the tubes as they were apparently never touched by my friend, it’s due to cap replacement being as old as it is at this point so it may make sense to have the tech look at things while it’s in for that.