Hi all. My 4-5 year old Cambridge Audio 540R Azur just started behaving very oddly. I was watching a Youtube video when suddenly there was a high-pitch noise from the amplifier and a text "Overcharge(?) protection" flashed on the LCD. The amplifier shut down and I started wondering if something was wrong in my cables or audio settings.
After I investigated the problem I noticed that the there's an oscillating high pitch noise even if I use the radio tuner as an input, so there's most likely something wrong on the DSP-D/A-Output stage area. The noise is present even with the volume setting "min", and no proper sounds are heard. The noise is slightly different with AM and FM tuners selected so something seems to get through.
I recorded the sound (poorly), you can find it at: dropbox. Is this a known issue? Is there anything I can do?
After I investigated the problem I noticed that the there's an oscillating high pitch noise even if I use the radio tuner as an input, so there's most likely something wrong on the DSP-D/A-Output stage area. The noise is present even with the volume setting "min", and no proper sounds are heard. The noise is slightly different with AM and FM tuners selected so something seems to get through.
I recorded the sound (poorly), you can find it at: dropbox. Is this a known issue? Is there anything I can do?