A guy gave me a Cort Action Bass that was all snap, crackle & pop. I used a schematic found here (Click Action Bass Series > "Action Bass (2006)" for a look) as a guide to resoldering the broken or weak connections. I'm pretty confident that I have it wired properly & I even checked the connections with a multimeter. Everything checks out as far as I can tell. I plug it in & I hear the notes of a bass guitar coming out of the amp. But... ...then it goes all Spinal Tap on me & I'm hearing the radio through my amp? Some talk radio show interfering with the signal? Have I gone wrong somewhere? What's up with this phenomenon?