Volume sticks while going up, not down. Now it's blasting and nothing you can do but reach for the dash. Or does not respond to buttons whatsoever.

Evidently, this problem is fairly common. Brought it to Honda dealer, and they offered no solution. Found the part online for $20.00 from http://www.yourhondaparts.com/partlocator/index.cfm?action=getJointLocator&siteid=215015&chapter=&sectionids=0,2575&groupid=51862&subgroupid=5351&make=12&model=Odyssey&year=2002&catalogid=2&displayCatalogid=0 . If you can spend only $20 on a car repair, then it's a good day.

Volume controls change station. Channel buttons change volume or don't work. Down volume button increases volume, etc.