Had a look- it's a Lanson LAN45RCD240. Looks like an RCD which is looking at the current difference between the active and neutral.

Click to expand...

It's the combination of a circuit braker with integrated safety switch. It will be the safety switch, probably a 30ma one which is very sensitive when there's a difference between the ground and the active that trips the braker.

So recap the Analog board including the 3x EMI/RFI capacitors and all the film capacitors. So a full recap except for the ceramic dish one's as there only rarely go bad.

Definately replace this one's with identical one's:

http://uk.mouser.com/ProductDetail/Kemet/PME271M647KR30/?qs=sGAEpiMZZMv1cc3ydrPrF85GIl804cbNz76Q8vgSP44%3d

and

http://uk.mouser.com/ProductDetail/Kemet/PME271Y447MR30/?qs=sGAEpiMZZMv1cc3ydrPrF85GIl804cbNf9hsfZMK6uI%3d

Have a close look at the plastic casing of these 3x EMI/RFI surpression capacitors: do you see cracks in it, especially in the 2x smaller blocks ?