gdjacobs wrote on 2020-01-14, 06:15:
I was thinking FC or maybe Nichi PW instead, although it's still not a great match. Unless you go over every capacitor application on the board to ensure there's no feedback issues, it's best not to stray too far from the original ESR.
The specs on those original caps were really quite lousy.
Panasonic FC caps are expensive and not so widely available here in Australia, and are an older, lower performance range. FRs are much more affordable and easier to get for me.
I wouldn't worry too much regarding feedback. The VRM circuits in question on this board were likely originally designed to use capacitors with performance characteristics similar to the FC/FR caps, and they will somehow tolerate capacitors with far worse specs and keep working for ages despite their awful performance. It is certainly possible to get feedback problems, but you would have to be using capacitors that completely do not match the job. (eg Polymer capacitors in a PSU designed for mid-range electrylics)
Edit: Although, looking at the original caps vs Panasonic FR, there is a huge difference in ESR. It would probably still work, because I can't find any other good branded capacitors that behave so poorly. Not even non-low ESR caps have specs that bad.