Nice, what did you use for drivers? Its a bit tricky finding something with the same bandwidth in a TO220 for these. I ended up getting some NOS toshiba's from Germany.(plus some spares)
There are not many caps in the signal path, some on the Phono pre, flat amp and EQ, and thats it, I used Nichi ES for the Bipolar and Nichi KT for polarised, and Nichi PW in the powersupply...
I went up to 22,000µF for the mains, can't remember what make the caps are, but I am actually going to slip some Gold Tunes in there when I get a chance.
The tuner is very interesting to align, when you do though, it comes up great, it has amazing performance. Of course you have to get a bit creative with some of the steps as Sansui love to specify a GeneScope for the IF alignment...
I use my tracking generator and Spectrum analyser for that...
You might find you will want to disconnect the trigger diodes for the over-current protection on boards F2902 and F2903, which is D12.
The way its set up, you can barely make 100watts RMS before the protection kicks in, this is when you're playing music.
Of course when you run a sine wave, it goes to to 220 watts on the meter which is what power Sansui decided to allow us to have, but on a brick wall basis....and this is where I think Sansui blew it, because obviously music is dynamic, some of those peaks are fast, too fast for any meter to pick up and harmless to the amplifier as the are only µS peaks, but it trips the protection.
I messed with the circuit a bit, but found it was still too trigger happy.
It really needs some sort of "look ahead limiting" which allows a certain level of peak to pass, and then just clamp the rails rather than shutting the amp down.
Looking forward to your impressions of the 22 when you compare to the 1980....