Tektronix had a range of low-end test equipment (eg. CFG250) in the early nineties, this was basically identical to mediocre equipment from some Asian OEM, except for a few knobs. Support consisted of just replacing failed units, since the Tek service center didn't have any service documentation. Quality was also below the Tek designs.
Oops. I guess buying a "for parts or repair" CFG280 wasn't such a good idea after all.
Guess I'll find out when it arrives. It was an obvious gamble anyway.