The Wanderer wrote:

It hasn’t leaked, its been fried

That was my thought as well. Perhaps a dry joint on t'otherside.

Or it may be that some other fault has resulted in full mains or
rectified mains voltage appearing across this capacitor which, being
rated at perhaps 50 V DC, has responded by blowing-up. Collateral
damage like this is by no means uncommon with SMPS faults.

--
Andy