Thanks Bruce,
Although many CD players can be sorted with a cleaned lens - seems slot-in dvds' never can.
Cleaned dozens, and it never ever works, even though they're designed to admit vertically rising crap filled air, either side of the lens, rather than the sealed ones used in computers that hardly ever go wrong.
As computer DVD rewriters are now really cheap, makes you wonder about the cost of the slot-in playback only rubbish fitted to current sets - Chris.