Right channel distortion


I've noticed a problem recently with an intermittent static/distortion sound in my right channel.The cds are clean and play without any problems on a portable player. Plus it doesn't occur with every cd. I'm used to hearing clicking and mistracking if the cd is dirty but this sound i haven't heard except when my stylus hits a particularly grungy area on vinyl.
Is there any chance this could be my tube preamp calling out for replacement tubes? I've heard that tubes get "noisy" at the end of their lifespan. Is this the type of noise and could it be somewhat intermittent or only audible with some frequencies? If it is the CD player, then why isn't it occuring all the time?
I unfortunately do not have an extra preamp to test out and don't have a way to plug the portable player into my main system.
Any suggestions on what could be most likely would be greatly appreciated.
jt101

Showing 1 response by bob_bundus

Paul's suggestiions are very good. Also be sure that your cables & jacks connections are clean - do you use contact cleaner? You can either take the shotgun approach (all at once) or if you really want to know what the cuprit is/was, then do these things one at a time, & then run the rig for a few days before trying something else if you haven't yet cured it. Good luck!