Time to finish the HP 6644A revamp!
tl;dr for the last post: Here’s where I stopped refurbishment after cleaning and replacing caps and fan:
First off, those leads stick out quite a bit at the back as well. I can’t really say which diameter I used, judging from the yellow cable lugs these were 4mm² for the power lines and 1.5mm² (red lugs) for the sense lines. Apart from not fitting the old protector, that one already has seen some damage. Probably because it is so tiny…
So: Redesign. Twice, as the first version that closely resembled the original design had really flimsy legs that suffered the very same fate. […]