Gr-30 tech questions

[Dana Vernon]

Gr30 puts out guitar sound but no synth. Also, how do you remove battery to change it. Original battery attached to battery terminals. Do I need yellow ring from original battery?

[Brent Flash]

Welcome to the group Dana Vernon! 

[Dana Vernon]

Thanks. I am newbie to this forum and don't know how to navigate it yet. Do you know who I should contact about gr-30 tech questions?

[Brent Flash]

Here is a link to the GR-30 section. GR-30