Having the same issue with a Galaxy I just bought and not sure what to source to replace the relay. GI worked for a month and then one night just stopped. The relay in mine (which is old and inside a cracked plastic case that shows burning - but not sure if this is original part or not) says this on the top:

275-206
Coil 12VDC
Contacts
3Amps 125VAC

I can see there's a wire that's lost its solder and is not connected to anything... but I also see a spot on the plastic box that is melted.

IMG_8906.HEIC copy (resized).jpg

Friend of mine in another state has a Galaxy that is in awesome condition... I asked him what he had in his, and it is a 48 VDC from Guardian. I assume the Omron is basically the same thing?

49938423_385720588857127_1800664639416041472_n-1 (resized).jpg

Update on my issue: I put the Rayex LB2-48DS in a week ago and got my GI back! After several hours of gameplay since, everything is working great! Thanks G-P-E!