Marantz CD67SE not reading discs?

Hi... I have a Marantz CD 67SE, which has become very tempermental at reading a disc, inlcuding the TOC. It won't even spin up when I insert a disc. However, if I wait for about 5 min's, and keep ejecting it, it will start to read the TOC, and then eventually read the disc and play.
I have cleaned the optics, both with a "wet disc" and cotton bud.

Can anyone help please?
Thanks
Dave