Finally broke down and decided I was just buying a bass today after wating for a bass I special ordered that never showed up for two months. I bought a fender jazz V standard for what I thought was a decent price at 399. I played it in the store but didn't really mess around with the volume knobs(which obviously I should have). I got home and plugged in and started playing and found that if I don't have the pickups on the same volume it has a humming/buzz sound in the background. I tried it through a headphone amp and its the same thing. I vaguely remembered people saying the old made in mexico jazz basses had a similar problem and looked up the serial number mn8164638 and think this is made in 1998. A bit on the old side for a bass I thought was new. I am wondering if this problem was a problem on the 5 strings or just on the standard 4 string model. I like the low B on this bass more then I have on the other jazz V's I played at other stores and I went to the store planning on getting a fretless 4 but picked this up after I saw the price and played it. If I hang on to this is it a problem the store can likely fix or something fender will cover under the warranty. Also even though the bass is 5 years old the warranty from fender should still be valid since it was sold to me as new from a dealer right? It was new out of the box BTW I forgot to mention it but I tried one out and they said they had a new one in a box which he opened up and let me play with before I left.