Just had same thing happen on my 965 + good news is can be fixed. not so good news is cost- at least not in UK, where I was quoted £200 by Steeles, in Brighton, or £300 for upgrade to 965i.
If in UK check Machine Knitting Guild site for list of engineers county by county- not that many sadly. Magazine Machine Knitting Monthly web page lists a few too.
Can't offer help if live elsewhere except to try google.
lizzie2211, March 2011