Solder all the capacitors in their respective places. On the logic board, where the capacitors a re located, is an outline of a circle with one part of the circle being heavier. It corresponds with the negative lead of the condenser.

There is a heavy stripe on the condenser, pointing to the negative lead. Polarity will be maintained by matching those.

Once all the capacitors are replaced, double check the board to make sure everything is properly mounted.

Now reassemble the Olevia following the instructions in reverse order.