Mark IV footswitch acting weird.

[Rufuss Sewell]

A few days ago my footswitch started acting weird. The Lead, LD-EQ and Loop buttons work fine. But the Rhy 1 and Rhy 2 buttons are switching between Lead and LD-EQ. It's really weird. Any clue what could be causing this?

 

[theroan]

Just out of no where? If there was nothing when you activated R1 or R2 then it's the footswitch, but the fact that a message is getting through to the head and then switching between L and LEQ is the result, it could mean you head is screwy. When I first bought my Mark IV it was a steal because something was wrong in the head that stopped the footswitch from working all together. When I took it in, all it needed was a good cleaning, but it was like $100 to fix.

That's all I got.

 

[Rufuss Sewell]

I tried it again and now it works?!?

 

[MrFingers]

I tried it again and now it works?!?

Did you unplug the footswitch then plug it back in? While not the case on my Mark IV, I had a similar problem with my old Peavey Triple XXX head. The Ultra/Crunch and Clean buttons were acting up, and pressing one seemed to do exactly what the other button should have done. I unplugged it, cleaned the contacts with a slightly damp cloth then plugged it back in and everything seemed to be back to normal. No idea if you did something similar but if it happens again, try that.

 

[espmaster1]

Sometimes the prongs that are in your amp get bent, and connections aren't made, I had the same thing happen. So make sure the prongs where your footswitch plugs into are as straight as possible.