Since a few days my Quad cortex makes super loud noises when booted after it has been powered down. Also the tuner goes bananas as if there was a LOT of noise coming into one of the inputs.
After a while, the problem seems to disappear and the unit works as it should.
I have changed all cables, tried a different power supply, factory reset the device - all to no avail…
I will link to Quad cortex broken? (a video of the problem on Youtube) - ANY help is appreciated.
There are some other threads that kinda go in the same direction. Alle came up at the same time.
I had the same problem: booted up QC, no sound at all, but the tuner went crazy and all outputs showed output (but there was just noise), when i rebooted the QC, everything was fine… until now no real “fix” other than rebooting. I think it has to to with the cables you plug in (every time i change it while the qc is off, it happens again when powered on)