Tomorrow I have a studio session and today my MIM P-bass started to act wierd. The sound went off and then came on again. I first thought it was the cable but the problem remained after I changed cable. It seemed like when I tapped the pickup i could get the sound on or off. Now it´s completely dead. I figure its the pickup. How do I know for shure? I´ve checked the solderings visually and they seem ok. Can I check with an volt meter in some way? If it´s the pickup, can you recommend a replacement. The local shop has a dimarzio, and a mid 70´s fender. Very grateful for any help!!