Sounds likely a PSU fault. You need more than those 3 led's lit. If i remember correctly, it is 5 out of the 6 lit (one very dim).
The only one that doesn't light depending on the version is the one that supplies the hopper voltage. It only lights when the hopper pays out.
Again, i am saying this from memory.
The problem with Epoch, the Psu blowing could cause other boards to develop faults... Lamp board (can cause psu to blow also), blown lamp board can damage Mpu etc etc.
Good luck.Go to the full post