hifi engine

HDD Not working (intermittently) in Yamaha CDR-HD1500

Has anyone else experienced this problem, and found a cure. Having removed the HDD from the above player, examined it, and tried, unsuccessfully to extract it's contents via a computer, I re-installed the drive into the Yamaha, and, to my amazement, it is now working again, and continues to do so if the machine is switched off at the mains, left off for several hours, then switched on again. Switching between HDD & CD works as it should. When the fault was present, the CD-R would work, but not the HD. My feeling is either that there is a (time-related?) fault in the HDD, or maybe is/was a bad connection between the drive and other circuitry. The HDD & CD-R drives, by the way, use IDE connectors