I've had 5 different Cary tube products they all used the 560uf filter caps in the power supply. Mine all did the same thing they were all older units too. They would start running hotter and I had to be very careful flipping from standby to on. They would pop a fuses. I'd change the 2 or 4 560uf caps and the problem would go away. They will leak oil too. LOL I thought I had an old Harley the first time one took a dump. Left a puddle of oil. :-)
I was using ACME at the time in my Macs, Carys, VTL, Threshold. I was given SR to try. I wound up paying for blue and orange fuses. 10 or so..
Regards