SVT 4-Pro Channel A very low volume

[Flump]

So it ended up being the zener diodes. I checked 216 and 217 and both were acting funky. Replaced them both and it works now. The two test points 9 and 10 are lower on channel A than they are on channel B by about .4 volts (11% or so), but I'm not too worried about it.

Thanks for the help and I learned quite a bit from this.