hi Tech Michael!
It's full mdel number is 50968 - HDI193X - it's coming up to 4 years old
The rest of the unit works fine - the extraction, the extraction boost and so on, it's just the 4 lights built into the extractor hood refuse to come on. I thought it was because one had blown, but i've replaced that and still nothing. the other 3 look ok (the one i replaced look grey at the end).
does that help at all?