One is for sale now.
https://www.ebay.com/itm/325499399350?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DtFWVMxYTKW&sssrc=2349624&ssuid=B7f00r-HRdK&var=&widget_ver=artemis&media=COPY
Just got the PowerBook 165c which works fine. I have checked there are really no caps need to be replaced. Only the LCD have this two boards.
Are these caps necessary to be replaced? Pictures from: https://oldcrap.org/2020/10/31/apple-macintosh-powerbook-165c/