Why No Bias Switch On My Tremoverb?

[Onepiece]

It's the UK (220v-240v) model. There's a bit of plastic where the switch should be. :?

 

[mikey383]

Try removing the piece of plastic. The switch is probably under it. I've seen a couple that were like that. The plastic just pulls off.

 

[Onepiece]

Sadly no.

The plastic turns out to be some kind of junction box with wires soldered into it. Like a switch box without a switch. :?