Sansui 9090 and fuses

[Eunomians]

I’ve had my 9090 for a long time - and I had a terrific AK member CDfixer restore and upgrade mine (RIP CDfixer, he was a true gent and I’m very lucky to have met him). One thing that I’ve noted is that my unit has the updated fuses (pic shows two 10a fuses). A few questions: should I change these to 7a? I’ve heard this recommendation floating around the net. Also, how about the 10a “rear” fuse? Should I change all 10a fuses to 7a? And lastly, my board in the pic only has two 10a fuses. Along with the “rear” 10a fuse, that makes a total of three that I can see. Doesn’t the 9090 have four 10a fuses? Am I incorrect? I can’t find a 4th10a fuse?

 

[ivandezande]

Well first off, your unit isn't restored, not even close, from what I see there. All those transistors need to be replaced.

Considering this fact, yes, I would go down to 7A until you have it serviced.

You're incorrect. The 9090DB would have five 10A fuses. One line, two pre rectifiers, two post rectifiers. You have three and then the rail fuses.

 

[Eunomians]

Thx for the reply. The pics aren’t of my personal 9090. Considering that my unit has been restored and upgraded (albeit much more than a decade ago), I’m wondering still if 7a fuses are the way to go? Just tryna keep it up to snuff.

 

[ivandezande]

Thx for the reply. The pics aren’t of my personal 9090. Considering that my unit has been restored and upgraded (albeit much more than a decade ago), I’m wondering still if 7a fuses are the way to go? Just tryna keep it up to snuff.

Ah that’s good. Nah, keep them how Sansui rated. If it’s restored and you don’t run 2 ohm loads loud, you’re fine.