Ultimate stereo nightmare


I have a complex stereo system, having accumulated many various components through the years. I also have an impenetrable jumble of wires.  Until now I’ve been able to deal with problems that arose. Now that I am elderly I can’t easily get down on the floor to assess things. I bought and installed new very expensive speaker cables (Audioquest Robin Hood), and subsequently found that my right channel was not working. After switching cables, the right channel was still not working. So the problem is somewhere in the system.  I don’t know if it’s a loose cable or something else and have no way of tackling the jungle of wires to check it out. 
I hired a company that claims they deal with these things, but there’s such complexity I don’t know whether they can deal with it.
 

128x128rvpiano

I'm up there in years too. My knees work when they want to.  Wish I was in NYC I'd happily help out an audio guy in need.

For me I like to ask my friends at church if they know a guy, after that I ask around at the country club. 

Definitely label the cables, and take the time to draw a schematic that cites the names on the labels and useful notes. 

@rvpiano very nice system! I'm glad you got it all back together with Jasmine's help. Now I need to go label my cables...

Buddy, you need to first see if the dropped channel is from all sources. That means it’s most likely a cable between the amp and preamp, as someone else here has said. If not, I would pull everything apart and start over. When you put it back together, put identifying tags on all your cables. 

Otherwise, get a service guy from an audio store to help you.