I have never heard of people having issues with SAM games and their mods drawing too much power. Many people run multiple splitters off of the +5v / +12v connection that is inside the cabinet near the service outlet. Something may have shorted out as PinballManiac40 said.
Pinball Life does sell an accessory power board, but that is for SPIKE 1 / 2 games. If it is a power draw issue, you could look into Rock Custom Pinball's Game On power supply:
It will provide an additional 3 amps of +12v DC power, includes an 8 way power splitter, plugs into the game's service outlet and is turned on and off by a light sensitive relay switch...so it can turn on and off with the game's power switch.