SACD loading problem with Lexicon RT-20

I'm only having problems playing SACD's, sometimes they play but most of the times I get the message "No Play".
Other formats are no problem.
Anyone an idea what te problem could be ?
No idea, but my RT 20 sometimes doesn't want to play a cd.
I have found moving the cd on the disc tray helps-but you'll have to experiment. Maybe a call to Lexicon? They said I should take mine in for a check up. Safe call..
No problem for me with DVD's or SACD's...