Just bought a 'like new' ashbory on ebay. Put in a new battery, and tuned it to C-G-D-A (I'm a mandola player). But, I've got three nasty problems:
1). The output jack is mechanically sloppy. My various guitar cords all wobble in it and make enormous crackles when torqued.
2). I have intermittent very high frequency noise. Can't hear it when the volume knob is down. Treble control makes no effect. Pressure on top of the pickup-bridge, or flexing the body will cause it. I can turn the treble on the amp all the way down, but what a waste!
3). Hard playing or tapping shuts OFF the output signal completely. Control knobs have no effect. Only pulling out the guitar cord (shutting off the 9V supply) will get it back.
ANY IDEAS? Thanks!