RH speaker bank not working. What to check first?

[Barchettaman]

Excuse my ignorance but I’ve never had cause to piss about with in-car wiring etc.

Neither the front nor the rear RH speaker is working on the wife’s Peugeot 3008.

Both LH speakers are fine.

What should I check, and where should I look, first?

Thanks in advance!

Simon

[Barchettaman]

Thanks all!

It's not the balance setting, I checked that in the sub menus.

I'll have a look and a poke around.