Bought an Ovation Celebrity CC-174 acoustic bass. OP-24+ preamp. It's a beater but plays well. The problem I have is that the pickup works as long as you don't switch the preamp on. As soon as you switch it on it goes dead. Any suggestions on how to get this out of the guitar body (the preamp)? It doesn't look like it will slide out the hole it is in, I think it will have to come out the soundhole. I don't want to do any more damage to it by screwing something up, but I only payed $50 for it so I don't want to have to take it in if it's something I can fix myself. Thanks in advance for any help! Casey