Hello All, Just joined this forum, hoping to seek some advice. I've been a fan of minidisc since buying my first deck in 1999. Been wanting an ES model for some time. Found a JA30ES listed as working on ebay, so won the auction. However, on testing, imagine my dismay when "disc error" appeared on the display on trying the first, second.....many discs before rejecting them! In a former life I was an engineer and sent on a Sony Digital Disc training course, and worked on a few decks ov