I have a Dual 505-2 purchased new in the 1980's. It was used lightly for a while then left unused and on start up after a lengthy period (cannot remember how long - a year+?) one channel died. It was repaired by a local Hi-Fi shop for almost half what it cost new! About eight or nine years ago, the fault re-occurred. It has been sat in the box since and through a housemove. I would now like to get it working. Any ideas on what the fault might be? Could it just be a 'dry' joint that I might find and sort with a soldering iron? Does it have a small circuit board and, if so, could a component have failed? Is there a weak point on these decks? I always thought the Dual 505s (all versions) had great reputations.