VirtualDJ - Garbled sound

I had this problem about 9 gigs ago and figured it was the building I was in because it was over 150 years old and had been rewired numerous times. BUT, it now happened NY Eve in a new place.

I hooked up the system and did a test run for about 15 minutes with no problems.

I came back to do the gig. The very first song was garbled coming out the speakers. I unplugged and replugged everything. It did not change anything. Anywhere from 1 minute to 3 minutes the song would get garbled. We shut the system down and switched where I got my electric from. I plugged into a line that had nothing else but a cooler on it. This still did the same.

I eliminated everything from my system except the laptop, mixer, amp and speakers. It still did it. I tried ground eliminators on everything from one to all and that didn't help.

Now, one thing I noticed all awhile doing these things was if I unplugged the audio input that goes into my mixer and replugged it cleared it up for another minute to 3 minutes. Another thing I noticed was that if the music audio output was garbled and we used the mic, the mic was clear. So it makes me think it could be in the mixer BUT, why not since the last time I had the problem? I also came home and hooked the system up and it worked fine all night, morning and day.

So, to make a long story short...... I took the system to the repair shop to have tested in the meanwhile. The shop also reminded me that computers hooked into the mixer could have some loop problems whereas the mic won't. They thought even a polarity problem?

Does anybody have any suggestions, did it ever happen to you?

Thanks, mike

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