My Flex 5000a has started having audio popping/crackling problems. I thought it was just received audio, and thought it was my speakers, swapped speakers still there. It Tried some CW and can hear it in Mon as well, with Drive at 0. It does it using CWX as well. Did some testing, and others can hear it in my SSB audio as well. Running KE9NS 220.127.116.11. One other thing I saw a few months ago, is if I MUTE Speakers only, I would lose my speakers when I unmuted. Had to hit something to get them back, but can't recall what. I thing it was hitting MUT several time. Any ideas how to determine if it is PC or in the radio.