Hi, I am looking for some advice with a fault with a C4-16S2-E-B.
It is connected to two Denon 8 channel amps, and has been fault free for around 9 years. In the last month, intermittently, there will be a very loud hum through all channels. At the same time the display will not appear when the bug button is pushed. Some time later the display will work and audio works fine. I now turn the power amps off, and check if the display works before using it.
Does this sound like a power supply fault or a failing internal component? My dealer says this has been seen before, but since it's a