Arcam FMJ DV139 not reading SACD's.

On trying again today, it wouldn't recognise the disc again, the display reading 'Bad Disc'. Before I replaced the laser mechanism it would read the redbook layer. I ejected and reloaded the disc and it did read the SACD layer. Then it wouldn't. Then a couple more times it would again.

It should also be noted I sometimes have a minor fault on start up. It may start up and read 'Initializing', the display will then go off for a while before coming back on when it has read the disc. Other times when I switch the player on it will load as it should.