I think there is a repair person here in the Bay Area, Adam Liberman:

self reapir tips: Eddie Ciletti like Panasonic better than Sony:

I have found my Sony 2300, while not as rugged a some people like, has 
so far (touch wood) never failed to play all DATs thrown its way. Even 
when good, aligned, and newish, no Panasonic I ever saw played every 
tape, even its own... Just my experience.

Lou Judson  Intuitive Audio

On Feb 6, 2006, at 3:39 PM, seva wrote:

> competent DAT repair places, DAT machines which seem to be more 
> tolerant, and more gentle, to the tapes?
> etc.
> -- 
> w/best regards,
> seva