OK i just got this line 6 mk lv 75 yesterday along with the shortboard mkii and i did all the updates everything went well,so i started going through the preset tones and so fourth i could go through several and all of a sudden the amp would have no output everthing looked like it was still working just no sound output turn it off and back on and it worked fine so i tried it again same thing if i go scroll through several presets kind of rapid it will do that almost every time and i have to turn it off and back on,thats rather annoying from a day old amp!!! Anybody else have that happen or know how to solve that problem?

Thanks