Sansui 661 right channel dead - help?

[bulletinwbw]

Hi everyone, today I purchased a Sansui 661 from a guy on Offer Up. I was assured it was in perfect working order, but when I got it home I found that the right channel is totally dead.

I tried deoxit, but unsurprisingly it made no difference -- as I said, the issue isn't distortion, it's simply dead, whether I use speakers or headphones.

The guy offered my money back, but I'd really like to fix the unit if possible. Unfortunately, beyond deoxit, I'm a complete beginner. Can anyone see anything obvious from these photos?

Thank you so much!

 

[jd3rdcoast]

Have you checked all those fuses? I have not looked at your schematic but many of the older Sansui's have fuses for both Left/Right outputs.

 

[bulletinwbw]

Have you checked all those fuses? I have not looked at your schematic but many of the older Sansui's have fuses for both Left/Right outputs.

I haven't checked the fuses. How do I do that? What am I looking for? I know that's is a ridiculously n00b question, but like I said, I'm a complete novice (though I'd love to learn more).

If it helps, the guy insists that the amp was fully working a month ago, but since then he's had it stored in his shed. The weather has been down in the 30s overnight, so maybe that's somehow a factor?

 

[bulletinwbw]

Just googled it. All of the strips are intact, so I assume it's not the fuse (unless I'm looking for the wrong thing).

 

[jd3rdcoast]

You will need an Ohmmeter or multi meter that included Ohms. With power off and unplugged, carefully remove each fuse one at at a time. Place leads on each end with meter on Ohms. Should measure very low resistance like 1 ohm. If the fuse is blown will measure OL for open or infinite Ohms. You can also inspect the fuse with a magnifying glass. if fuse is intact should see small wire from one end of the fuse to the other inside the glass tube with no breaks. If blown, will see no wire or a break in the wire and maybe some discoloration from when it burnt in half. Replace with same rated fuse (never higher) and retest.

 

[jd3rdcoast]

Just googled it. All of the strips are intact, so I assume it's not the fuse (unless I'm looking for the wrong thing).

I see four fuses inside.