So, after 33 years, 3 months and a couple of days (exact date of expiration is unknown), my beloved and trusty Gossen Luna Pro SBC has (apparently) decided to depart for photo gear heaven. A change of batteries (Duracell Copper Tops, right out of the package) elicited no response: the needle did not even deign to budge from its resting position. Is this chestnut worth repairing (vs picking up something more modern)? To my fellow Canadian APUGers (or my friends just south of the 49th): where would one send this device for an repair appraisal? BTW: The meter was a Christmas gift (1980) from my late parents, so there is, needless to say, more than a little sentimental value to the SBC.