Help! My friend loaned me his MFJ 259B antenna analyzer to help me sort out some issues with my HF radios and dipole antennas. It was working great, and then I accidentally hit the mode and gate buttons simultaneously, and it went into advanced mode. I got it back into normal mode (I think), but now I get almost full deflection on the SWR and impedance meters on every antenna and every frequency. Even when hooked up to a known good antenna or a dummy load. Any help would be greatly appreciated.