help!

[diamonddray]

i play a warwick corvette std active,i was praticing went outside to take a smoke-break ten mins later the active wouldn't work.took it to the local music store 3 weeks ago.they "checked"it out said they would call warwick and try to find something out.the bass plays in the passive mode but draines batteries

 

[diamonddray]

warwick corvette std 6 active has anyone replaced the mec two band for a bart hr-3.3 tell me about it please.