My Denon is out of warranty. How expensive is expensive to repair? I would have it fixed if i knew I would get years out of it. I bought Denon because I thought it was top notch stuff. I am almost 40 and had a lot of stereo stuff in my life. Denon is the only one that has failed me. I am pretty good with electronics and soldering if I can get the part myself and put it in. Not sure what to buy though or who to buy it from.
I'm over 60 and its not like the good old days. Digital circuits you can't trouble shoot with a generator, multimeter and scope.
The next problem is that components are generally surface mount placed by robot. It is not at all like the old days with through and through components.
I do believe that some receivers have some degree of self diagnostic ability for well equipped shops. You are generally committed to replacing a whole board rather then a component.
Unfortunately you may have to have the whole processing board replaced.
See if you can find a shop that will give you an estimate. However I personally feel a shop can, and should charge for diagnosing faults. This may be around $70 or more for a start.
The next issue is that this fault likely has nothing to do with it being a Denon.
Denon don't build the chip sets.
The real problem is way too many features.
Receiver manufacturers are loading up with far too many features, as that seems to get sales. We are now at the point where I'm certain this is going to reap a grim harvest.
One of my sons is a research engineer and designs powerful chips. He is very good at electromagnetic simulation.
The problem as he explains it to me, is that as you increase processing power, then you build in shorter life and unreliability.
The reason is that you can only make the chip more powerful, by making the semiconductor layers and the devices in the chips smaller and smaller. If you make the chips bigger they don't work, because of the speed of conduction within the chips. His electromagnetic simulations predict all this.
Now when you make the semiconductor material thinner, you have greater risk of a spark starting to punch wholes in the semiconductor material. When those wholes start to conduct, then you get the problems you are experiencing. Eventually the electrodes weld and you have a dead short, and shut downs from the protection systems.
Really putting these types of circuits in the same case as a big power supply,
and seven powerful amps, and at the same time add power and features to the processing boards, is asinine.
Unfortunately the industry is geared to receivers. I have never used one and never will.
I think that we should go to preamp processors, and put the power amps in the speakers where they belong. Active crossovers and amps for each pass band in the speakers, has the potential to increase quality and reliability.