Earlier I wrote...
It's tempting to do a re-cap on the basis that "I might as well do it while it's out of the 'scope", especially as these PSU's are not the easiest to extract from the chassis and disassemble to work on but I am not sure I would rush into a blanket replacement of the existing caps unless you know that there is a problem.
I should have known better, I suppose, than to tempt fate :)
The 10?F 100V caps looked and measured OK and I left them in situ, the two 180?F caps for the +/- 15V unregulated lines had high ESR (strictly one ended up with infinite ESR as one of its leads fell out when removing it from the PCB), the 250?F caps decoupling the 5V rails measured OK but the bottom red plug was bulging a lot (normal??) so I swapped those, all of the 100?F 25V caps measured absolutely fine as well but I could see evidence of electrolyte leakage around the rubber bung so they all got replaced.
New caps were Nichicon UPW/UPM/UPJ on the inverter board and general purpose Nichicons (UKL's) on the regulator board - apart from C1130 where I used a "high ripple current" part.
So much for "if it ain't broke, don't fix it".
The scary bit will be reassembling it and hoping that it does not go "bang".
--
Paul
