Hi all. I need some advise or help on how to fix my problem. The unit I got works okay (records and plays) only when the unit is upside down! If I lay it flat on it's back, it plays for 3 to 5 songs and then all you hear is the disc spinning. Tap it on the side or back of the unit and starts reading again but after a few songs does the same thing again. This was on all my recorded discs. Same when recording. Goes to TOC Edit after 5 or so songs. I've cleaned the unit with an md lens cleaner but results are same. So I tried having the unit facing down and sometimes in vertical position and no problems whatsoever with playing all the songs or recording. Really weird. Hope someone can help out. Thanks and good day.