age is only a number
AO Gold Member
Join Date: Aug 2004
Faulty regulator more likely given the described whirring/buzzing sound. Your switch could be faulty, of course, but can't see why that would make any noise - mind you I can't see why pressing the passenger switch as well as driver's would make it work before.
Easy enough job - plenty of threads on here if you do a search, describing how to remove door card - you'll then be able to see if the mechanism has snapped the cable or whatever. Replacing the motor is only 15 minutes or so of a job, and second-hand spares are readily available.
Probably worth lubricating the runners for the glass to make things easier for the replacement motor, too......
AROC Vice-Chairman and Lancashire Section Secretary
Alfa organ donor to the gentry......