CD loading problem with Lexicon RT-20

Thanks. I hope someone else can expand with more detail.

It may be the laser assembly is near the edge of dying. I had similar experience, laser died later.

Any way to check the laser assembly?

you'll have to open your top cover and than you'll have to open the housing to reach CD-tray where you will see laser lens on the bottom. there's no way to check it technically, but if explicit cleaning would not stop skipping, you will have to take appart mechanizm or simply replace it. the mechanizm itself should not cost a fortune and in most cases is in $3x.xx range.