I have edited on my previous long post and stripped it down to just one help request, having figured the rest out! I have just got hold of a Beocenter 8500, and there is an issue with the CD player.  I have cleaned the lens but it remains temperamental. It will sometimes play a disc, but rarely.  When a CD is added the track numbers show up, but when pressing play, most of the time the disc just spins for a few seconds then it stops, the clock remains at 0:00.  Sometimes the door also slides open, as thought the unit thinks there is no disc inserted.  If I keep trying it will occasionally play the disc, but only quite rarely. Maybe it's just lens alignment, but I nave never tinkered with a CD lens before; I don't know where to adjust it?  I have read also that capacitors can require replacement and I have seen that a kit is available quite cheaply from Beoparts Shop, but I'd rather not start soldering unless I am absolutely sure that is the issue. So, does anyone recognise this issue, and know the likely cause? Addendum 07/05/2024:  Continuing to test it, I've also found it plays some CDs almost every time, but others it will have the above problem.  It's not the condition o the CDs - they are brand new and unmarked.  This makes me think it is unlikely to be the capacitor problem as surely that would be the same for any CD?  Laser alignment seems the most likely solution but I don't know how to adjust it.