I remember that bit of fun all too well... or I am going senile...

Back when these things were new and shiny, I had a power supply go and I was pretty sure it was just a fuse. Easy change.... except for the fact it was, as I quickly learned, a de facto fossil inside a beige-ish (as I dimmly remember) block of solidified goo. I was wondering why it was so hard to get the power supply case off...

The whole thing was prone to overheating IIRC, which shortened its life. Being completely encased in resin probably didn't help the heat dissipation.

That does explain why the damn thing felt like such a brick.