C33 on the logic board or analog board? Either way the board with that cap needs to be recapped if it is leaking.

Most Classic IIs can be brought back to life 90% of the time with a recap, it is the easiest of boards to resurrect - though there is a hard to replace cap on between ports on the back-right hand side of the machine.

Once the logic board is recapped and brought back to life, the analog board should be recapped as well. Also check for cracked solder joints along the connectors.

How many ROM Chips goes it have - 2 or 4?