Marantz SR5012 receiver been working fine for last 2 years. This afternoon it suddenly developed an issue. I started streaming on HEOS and sound was cutting out for a second repeatedly. Figured it was an internet issue (though it's hardwired Ethernet and fiber optic gig connection). Went to watch a movie tonight and same thing is happening on movies from any streaming service using smart TV apps (LG OLED) or another streaming device (Shield TV). Interestingly, the video streams fine without a hiccup. Only the sound cuts out. So, then I tried the turntable -- same thing happens with a record playing. It's not a network issue. Same thing happens with playing a Blu-ray disc. Video is fine, sound intermittently cuts out. To make things a little more interesting, I timed the cut outs. Each one last about 1 second and they are evenly spaced at about 26 seconds apart. It happens nonstop on all inputs. I can stream and listen to TV speakers without any issue. It also seems like suddenly, things are more unstable with automatic input switching. Will set it to Shield input and it will switch back to Turntable randomly. But the input is not changing when the little sound dropouts occur (though I wonder if it is partially occuring, input switching going bad?). Tried restarting, unplugging, looked through settings. Turned off HDMI switching. No luck. Any help much appreciated. Thanks.
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