My Kenwood Chef Mixer (Stand

My Kenwood Chef Mixer (Stand mixer Model no A910E, not the models you have in your 'pick list' - 375Watts) which has been in regular use for 20 years suddenly started smoking today - rather dramatically! I turned it off and disconnected it. There is no obvious damamge outside, but I don't know how to check inside. Will I be able to get this serviced anywhere, or is it too ancient? It has been a wonderful mixer, especially for kneading bread with the dough hook.