i recently bought a modulus vj4 from 513rocks here on talkbass. Im really satisfied with the bass itself and until now i had no problems with it. When i plugged the bass into my computer the other day to record something i wanted to roll off the bridge pickup and record with the neck pickup only. I got no signal though. I tried to adjust some volume settings on my computer no, i didn't help. The day after i went and got another battery to see if that was the cause. It wasn't. Anyhow when i plugged the bass in later the same day the neck pickup worked fine for a whole session, and i thought the nightmare was over. I was wrong, today i went to the local guitarshop to try out an eden amp, and meanwhile the problem had returned. What's wrong and what can i do some thing about it? I don't feel like going and getting ripped off by a some "expert" and have him exchange the entire electronics..