I am recapping my ZP90 at 12 years old. The caps mostly appear good, apart from the 1800uF on the 3.3V supply, which has a bulging top. I think its testamount to a good design that these units last this long. I leave mine switchedd on all the time, with 230V nominal mains.
These are the main capacitors, all originally by Jamicon, to consider replacing. They should be replaced with parts with same or better ripple current, life hours, and similar ESR. I avoided organic polymer etc, which might seem an upgrade, but which could lead to loop instabilities. My cap choices were rather limited by stocks.
400V 22uF main reservoir. 20mm long maximum. I am going to use https://hu.mouser.com/ProductDetail/Wurth-Elektronik/860241378003?qs=sGAEpiMZZMsKEdP9slC0YVUSgIC2sJFYWYuR0ZnncGk%3D
22uF 35V C104 - low stocks meant I am not going to worry changing this. value for info. Its the aux supply for the switcher IC.
C206 1800uF 6V3 105c Jamicon MZ 18 tall dia 10 pitch 5. I will use https://eu.mouser.com/ProductDetail/Nichicon/UHW0J182MPD?qs=sGAEpiMZZMtXHE36kCvv31lk8pGsgMbjZyo23Sz28Mk=
C207 1200uF 6V3 105c JAmicon WG 12 tall dia 10. I will use https://hu.mouser.com/ProductDetail/Rubycon/63ZLJ1200M10X125?qs=sGAEpiMZZMv0NwlthflBi5L7Q9U6tnPNnxj37RFa5A8=
C202 100uF 25V JAmicon WL dia 6.3 pitch 2.5 these dont have much load on them, I am replacing, but didnt really find sufficiently better parts to put as a link here.
C203 47uF 35V JAmicon WL dia 5 pitch 2.5
I think in most cases replacing the caps I have put the links to will give these great ZP90s a further lease of life, indeed, these capacitors I would expect to last a really long time.