Panurgy OEM in New Jersey is now handling both warranty and out of warranty repairs for Cambridge Audio. I just received back my 840C which had a similar problem. The drawer would open and close only intermittently and the CD would fail to be recognized. Cost to repair was just under $100 not including freight. They had the part in stock and the repair was done within a week of their receiving the unit and a $65 deposit. It's still in the box so I cannot as yet report on the quality of the repair, but I will fire it up tonight and report if there are any problems. I found them honest and professional. Here's their contact info:
PanurgyOEM
PanurgyOEM
701 Ford Road | Rockaway, NJ | 07866 USA
t.973.625.4056 | f.973.625.9489