Hi everyone,
I just dusted off the old Marantz MR220 receiver that I bought with grass-cutting money when I was 12 (1977). It still works great and is going to provide my tunes out in my new shop, but it needs a little TLC. The backlighting no longer works and the volume knob creates a lot of crackling when you turn it. Can someone direct me to help/support with an old model like this?

Thanks