Yep, what Rasz says,... I picked up a 2445 for a song which was coming up with allsorts of selftest fails, hit & miss powerup etc,... after a PSU electrolytic cap replace, and set up, has given sterling service for years,.... Some custom parts are available from QService ( on the Greek island of Rhodes)
Not cheap, but seem to stock most of the hard to get bits... I did stick a small heatsink on my U800, it has never given any trouble, but as I had the unit apart......
If you decide you don't need them, Dave, I'll send you the shipping to 'The Old dart', I'd love em!!!!
Cheers, Merry Christmas & a Happy New Year to you & yours,...
Fred G4ZWI