Help finding rail fuses in an old B&K power amp

Hi :)

I have a B&K ST1400 power amp from the 90’s (?) that is exhibiting signs of it’s age, and it is outputting really low level - no where near where it used to be.

Someone who knows about this stuff a lot better than I do, recommended that I change the rail fuses.

Are these them?

http://jeffreyhayat.com/temp/bk.jpg

Thanks in advance.