Hi Dave,
Guess if caps not fitted, you can check vacant holes with printed numbers - Check with shematic for values and voltages - If in doubt use 35v for everything apart from the big cap at 450v if has been removed.
Most caps are 16 or 25 volts, so 35v will sort most everything apart from the main (Big) cap at 450v
Best of luck - I'm only a technician myself - Chris.