So for a little while now my Sony DAS-R1 has had a problem with the left channel cutting out. It used to get better by itself after a minute or so, then it needed longer. Now I have the lid unscrewed all the time and give it a wee tap. While this cures the symptom it doesn't cure the disease and the wee tap is now turning into a prod, before I know it, I'll be using a frame hammer.
I'd like to fix this myself however I only just know which end of a soldering iron plugs into the mains and which end you use to burn your fingers touch against things to heat them up.
I've looked under the board and I cannot see any obviously broken connections. I am fairly certain that the problem is in the connection to "the big black cube". Simply because that's where I'd tap for the most sure fire results.
I throw myself upon the diagnostic wisdom of the great and the good here.
Photos resized to 1024x768. I'm also uploading the fullsize ones. I can photograph anything you like in detail if it helps.