Help! hitachi MV230A won't recognize any dics — DVD Tech — DVD MP3 AVI MP4 players codecs conversion help

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Hi All, I have a Hitachi MV230A -DVD camcorder which I bought a while ago
but never used. I can't seem to get the bloody thing to recognize the discs
(any discs) when inserted. I keep getting the error message "No Disk". I
understand other people have had this problem in the past. Anybody have any
ideas?