jp1

Hey so it’s my first time on talk bass and hopefully I’m able to get some help. So I own a Yamaha jp1 for a month now and I just now found out the bass has have 2 blue boxes I believe are called (potentiometers) apparently you can adjust !!! Question is how do I adjust ? What exactly does it do...

Greetings, Sadly I have broken one of my beloved JP1's tuners. The mechanism doesn't work anymore. Locally, I can find Jinho tuners but I really want to find an original one or set of 6, which have this original "YAMAHA Japan" sticker on the back. Does anyone have such tuners or can you please...