Fender Super Champ X2 channel push/push switch defective

[txstrat]

Hello fellow Members, long time no see...

on my desk is a Super Champ X2 where the channel (push/push) switch doesn't word like it should. The channel switching works fine with the foot switch.
While in the 1st (clean) channel I can push the button on the amp and the indicator light of the 2nd channel comes on. The amp plays in the second (16 voices) channel as long as I hold the button down. As soon as I release the button it comes out again, the light goes off and the amp goes back to the 1st channel.
I have a second amp of these and found that the push/push button should stay "in" when switched to the 2nd channel.
Is this a common fault of these amps?
Can the switch sort of " be repaired" without pulling the pcb? (maybe some lube or so?)
I'd appreciate every comment.
Thanks in advance

Matt

[xtian]

Deoxit is worth a try, as is resoldering the contacts. But you may need to replace. You can certainly determine whether it's doing its job by using your multimeter.

[txstrat]

Well, it's doing it's job partly.
The channel switches when I push the button.
It just doesn't stay this way. If I let go of the button, the channel switches back.

[The Dude]

It sounds to me like the switch isn't latching. It might be best to just replace it.

[Jazz P Bass]

The switch has failed.
Here is the replacement: Fender Amp Parts - Fender Switches (amprepairparts.com)
Original Fender™ part number 0028091000. Also, Fender™ part number 028091, and 028091049

[txstrat]

That's what I thought in the first place. Just wanted to make sure.
I've already ordered a new one at my local music store.
Thank you all so much for your contribution.