Mark levinson 432

One of the channel has a scratchy noise ( like scratch lp ) the sound drps out for few second and came back. It appears only when I played the music , anybody can help to tell me what is wrong
Do you have more than one course to try?
Swap interconnects, then speaker wires and see if the issue follows, or stays in the same channel.
+1 to above. pray that it is a cable issue.
Oops, I meant "source" : )

What pre amp are you using? The issue could be there as well. These things are always a pain to find.
Sounds like a capacitor issue to me.
This is a classic symptom of a bad connection or solder joint.
I think you may be correct Will. Hopefully it is just at the connector, or somewhere easy to access / find. Easy local fix without having to ship.