So I recently acquired a Korbanth Duke, with a CS 2.5 in it. had it out over the weekend and it was a big hit. since I've brought it home and turn it on it is playing constant swing sounds after power up on all fonts. Clashes still register and FOC, lock up and blaster also plays and FoC works fine along with changing sound font with the aux button. Tried putting in kill key and clicking out SD card, but unsuccessful. Any suggestions?