I've got an older model Clarion car stereo, and my battery recently died. After replacing it, all the buttons on my stereo will no longer work, the only exception is the volume knob. I can insert a disc or USB drive and it will play just fine, but still nothing but the volume knob will work. I have done the reset as instructed in the manual, but still no change at all, does anyone have any experience with this? The model is a CZ-302. Thanks!