IEC connector with fuse and switch

If your fuse comes with a ➡️ marking (like QSA fuses) which are the latest rage in aftermarket fuses. If the fuse you’re trying don’t have any orientation marking, then experiment with both sides!

Thanks to @willgolf for posting below explanation on a QSA thread.

“It depends on the orientation of the iec input on the back of the component. if the iec input is oriented so that the center contact is below the contacts on the left and right, then the hot is on the right side, and the arrow should point to the left. If the center contact is above the left and right contacts, then the fuse should point to the right".

“if the iec input is oriented so that the center contact is below the contacts on the left and right, then the hot is on the right side, and the arrow should point to the left”
@jw944ts, 

Going by the advise from TweekGeek, you would insert the QSA fuse with arrow ⬆️ pointing towards XLR/RCA inputs. 
https://www.tweekgeek.com/quantum-science-audio-5-x-20mm-slow-blow-fuse-limited-availability/

@jw944ts,

I have reviewed the back of the amp, it appears the fuse holder *IS* on the rear of the chassis, between the IEC inlet and the on/off power switch. The trick to removing the fuse holder is to use a small flat head screwdriver to pry open a little latch at the top of the holder and then use the screwdriver at the bottom of the fuse holder to begin to loosen the compartment. Once you pull out the compartment, the fuse orientation should be as I suggested in my last post.

If you need further assistance with fuse replacement, reach out to Mark at Reno Audio.

PS: Make sure the amp is off and disconnected completely from power grid for atleast 2 hours before you proceed with fuse replacement.