Pre/Pro power supply temps.

Ok, my Marantz 8801 can get a bit on the warm side (mostly in warm weather) so during summer I was feeling the need to turn it off in the afternoon because of this. It's gets hotter than my power amps (due to Amps not working hard)

It gets hot from the underside, which I can feel when I put my hand under the chassis, so I tried to find out what was sitting there inside to be causing these temps considering this is a pre amp and not doing any hard wakka as such.

As it turns out, this is sitting there, the power supply:


And these are the caps in that power supply


So I'm guessing the 4 black transistors (?) that are attached the the chassis are what's causing the heat and they are using the copper chassis as a heat sink.

So my question is, are the parts pictured, and I know it's not detailed, good enough parts to be able to withstand high temps for a good while, I'm always paranoid with high temp gear, even though my Yamaha z9 will burn your hand at idle and it's lasted 12 years.

Any thoughts on the matter @Zaphod Beeblebrox

Cheers

I'll he to add, not a bad power supply for a pre, I've seen smaller caps in some amplifiers.