Having sorted one D-lite last week, I decided that I should tackle one of my older ones, a EL250, which has started smoking (I know dirty habit) almost as soon as it is switched on. Figured that it was possible something causing a small short or possibly a build up of dust inside the casing, I thought that I should at least have a look. A bit more complicated to strip down than the D-Lite & there are no teardowns on the web for them (at least that I could find). Anyway out of the case came a shit load of dust & a loose screw (I assume that the previous owner may have had a play). I couldn’t see anything obviously wrong with it, reassembled it & now it works fine.