I have a Onix OA21s (powered by SOAP 2) and I accidentally touched the positive post of my speaker cable to the negative post of my LEFT channel. I heard an "boom". When I hook it up, my left channel seems to have died. So I powered off and leave it for a while. I powered again to find both channel working again! Did I short something? My input when that happen was set to VCR. I swear sometimes the output goes soft and loud. Any help would be appreciated.