Soldato
So many options, but your PSU might have just failed. Seems like a very obvious one, change the power socket you are using make sure no extension, and also change IEC lead and make sure the fuse isn't blown. 
Soldato
Have you checked? I can see it in pictures.
So many options, but your PSU might have just failed. Seems like a very obvious one, change the power socket you are using make sure no extension, and also change IEC lead and make sure the fuse isn't blown.
I've replaced the PSU but still have the same issue.
Had a look but there's no actual LEDs - just looks like tiny points on the board where you could possibly solder tiny LEDs