Dear All,
assuming there's still someone out there into this topic (refurbishment of a now almost 30-year old Sony D-Z555)...
I have managed to finally buy one for cheap (DOA), took some efforts to bring it back to life. Besides the caps, the main issues were a damaged trace underneath one of the leaking caps that has to be re-built and a stuck laser head. Responsible for the latter was the middle gear, totally blocked. Removing it caused damage (plastic broke) and therefore I had to source a replacement (got some fine, custom made brass gears).
As for the caps, I have replaced them with audio grade 1:1 equivalent. Radial caps were OK, so I didn't changed them.
Bottom line, the machine is back alive.
However, even though I must say I'm not an expert (not at all), I have noticed that some discs seem to be reproduced finely, some others not. In particular, even at the minimum volume, both channels are totally saturated, there seems to be no dynamic (on the display, gauges level is fixed at max on both L and R).
Any suggestion?