The sub produces a white noise without an input signal. With the accelerometer disconnected the driver goes to one extreme and then the other. My +45V and -45V rails are pretty close to 45V and have less than 0.1V AC ripple with no input and the speaker and accelerometer disconnected. The +45V section of the PCBA is dark and charred looking and C17 is measuring 1.7kOhm (when it should be a 10uF cap). Hoping that if I replace this cap and maybe some of the other nearby components it will work properly again. Any other advice or thoughts?

Audio Players & Recorders - Velodyne - FSR-12 Speaker