"there is crackling when you raise and lower the volume. On two occasions the volume got much louder without any reason."
My unit had that exact problem. If it still exists, try rotating the volu,e knob vigorously back and forth for several seconds.
This worked on my unit. The unit is sealed, so comtact cleaner won’t work, like on a traditional pot.
Aniwolfe- my unit had a bad relay. The symptom was a dead channel.
My unit had that exact problem. If it still exists, try rotating the volu,e knob vigorously back and forth for several seconds.
This worked on my unit. The unit is sealed, so comtact cleaner won’t work, like on a traditional pot.
Aniwolfe- my unit had a bad relay. The symptom was a dead channel.