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Just uploaded my Apple Hard Disk 20SC recapping video, which also covers the 40SC, 80SC and 160SC since they all use the same SONY CR-43 PSU. Check the text description for a Mouser Cart and useful info. At the end, I do a boot test with a 2015 15" MBP.
I'm in the planning process to recap the SONY PSU housed inside my Apple HD20SC external hard drive enclosure. (I might make a video.) I've got a Mouser cart filled with mostly Organic Polymer Aluminum Electrolytic capacitors for that PSU (see below), which have very low ESR down to between 12mΩ and 43mΩ. There are many benefits to low ESR capacitors, and the life rating on them is very high compared to regular aluminum electrolytics. But my concern is that the output of some switch-mode (switching) power supplies can ring if the ESR of the output capacitance is too low (as per the data sheets of many switch mode controllers), so do any of you have a schematic? If not, have any of you used a large number of Organic Polymer capacitors in your vintage Mac PSU recap jobs with success? (I'm asking about power supplies here. Non-PSU applications don't matter much. Mostly those cases are a decoupling/bypass caps which hold up the voltage in times of voltage dips, and those caps benefit from very low ESR.) Here's my Mouser list of mostly polymer caps: C226: 22uF 35V, D=5.2mm -- (Mouser: A759BQ226M1HAAE075) C202: 47uF 25V, D=5.2mm -- (Mouser: A750EK476M1EAAE040) C222: 47uF 25V, D=5.2mm -- (same as C202, so get 2pcs) C109: 150uF 400V, H=32mm, D=25.8mm -- (Mouser: 860021383023) C110: 4.7uF 350V H=32mm, D=12.8mm -- (Mouser: UPM2G4R7MHD) C210: 330uF 16V, D=8.1mm -- (Mouser: RL81C331MDN1KX) C215: 470uF 10V, D=8.1mm -- (Mouser: RNE1C471MDN1) C213: 22uF 100V, D=10.2mm -- (Mouser: A759MS226M2AAAE045) C124: 2200uF 10V, D=12.7mm -- (Mouser: UHE1C222MHD) C209: 2200uF 16V, D=12.7mm -- (just buy the same as C124, so get 2pcs) CR-35 daughter card: C181: 100uF 10V, D=8.1mm, H=13.5mm -- (Mouser: RNS1A101MDN1KX) C182: 100uF 10V, D=8.1mm, H=13.5mm -- (same as C181, so get 2pcs)