This is the easy way to convert a Galaxians from AC to DC. It leaves all of the components that will no longer be used on the PCB, and may actually damage them, preventing it from being converted back to AC should the need arise.

The wire link used should be of a decent thickness, 1mm or more, since it will be carrying all of the power for the PCB.

Around about position 11N on the PCB, are two large diodes, labeled D4 and D5. Near these, by the heatsink, is a capacitor, C37. We wish to make two links from the ends of the two diodes across to the track that the +ve end of the capacitor is connected to. (see picture for details)

For reference, here are the pinouts for both the original AC supply and the DC 
converted supply:-

AC SUPPLY 

DC SUPPLY