Quoted from msarac:I wasn't aware of that trick to test the diode. It was reading .48 just like the other diodes in that area so I assumed it was good. Replaced CR8 and CR9 and both the sling and pop are working great now! I guess the moral of the story is you can't always trust the multimeter test with diodes?
You cannot test a diode in a circuit, only by itself.
Glad you got it figured out, I know what a relief that is.