Sounds like you have experienced the classic "misload", where everything looks great with levels everywhere but your tape is...blank.
Never happened with my D100 in 4 years, but the used M1 i bought here has experienced it twice in the last year of using it. The last time after taping the Funky Meters, an absolutely smokin' show-grrrh!
Paul at Pro Dig certainly has the confidence of virtually every DAT owner I know, but I've never seen anyone recommend your deck being sent off for repairs after this type of incident. Never seen an explanation for it either, though I now know a pretty good way to find out if your tape "misloaded" before you start taping the show-so you at least can be sure evrythig is working OK.
Basically, you load the tape, go through your pause/record/pause sequence (without rushing it) and record a few seconds of crowd. then stop and rewind and play, to see if there are some levels showing your recorded crowd noise. If so, you should be loaded OK and good to go. If not, I suppose the procedure would be eject, reload, and try again.
I'm sure someone has a more detailed explanation, and a plain answer to the ? of whether you need to send off your deck after this happens(once). I think after my second experince with this problem, my deck probably needs to be looked at.
comments? DougL