I just got a Line 6 Spider III 2x12 150 Stereo Amp. I know these amps get a bad rap, but I got a real good deal on it because it has problems.  When you turn it on it plays normally on the setting that that it is on when you turn it on.  If you leave it on that setting you can play it indefinitely. When you change the preset the little window that has the name of the preset goes blank and the amp stops making sound.  When this happens you can hear a regular clicking sound. The only way to get it to work again is to shut it off wait a few minutes and turn it back on. It always does the same thing. When you do the factory reset it works but when you change presets it cuts out again.    Anyone have any idea what the problem is and whether it is worth fixing.  This is my first post here. Thanks in advance for any help you all can give me on this problem.