Hello,
I recently picked up an old SV mk 1 112 and the old full control floor board.
I am familiar with the line 6 amps and the use of channel volume vs master volume.
I've been experiencing a volume issue. Randomly the volume will get really loud. Often switching to another patch and back will correct the problem.
It was getting so annoying that I went set the individual channel volumes to Max on my personal patches thinking that might solve the issue.
No luck, I still see random huge spikes in volume.
Other symptoms..
The master volume pot is scratchy at low levels
The wah on the floor board has a HUGE volume increase when engaged.
These are the old versions. there is no way to edit them via a computer.
Any ideas to try appreciated. I like the sound of the amp when it is behaving!