I just purchased a 2230 for a good price. The aux and tape channels work perfectly. The phono channel sounds great with the exception of an intermittent low frequency noise that comes usually when there is a low bass part or deep kick drum parts of a record. It's subtle and just barely underneath the music, but it's definitely there and it definitely bothers me. Any ideas? I've been reading a bunch of threads on here already and it seems maybe transistors in the phono stage, but I haven't found anyone with the same exact issue I'm having.
I know my way around guitar tube and solid state amps pretty well. I've built 2 tube guitar amps from scratch, and do repairs for friends, but I've never set fingers inside of any hifi audio equipment aside from cleaning pots. So with some guidance, I'm somewhat confident I could handle anything going on in there.
Thanks in advance to anyone willing to help me out.
I know my way around guitar tube and solid state amps pretty well. I've built 2 tube guitar amps from scratch, and do repairs for friends, but I've never set fingers inside of any hifi audio equipment aside from cleaning pots. So with some guidance, I'm somewhat confident I could handle anything going on in there.
Thanks in advance to anyone willing to help me out.