Although this should probably go under a new thread, I'd thought I'd try here first.
I just installed the Speedball, and all of my voltage measurements are correct with the exception of the ones from the headphone jack. When powering the unit up, the voltage slowly increase for a bit and appears to be normal. Then my Fluke shows 0L or overload. This happens for just barely a second, and then drops down quickly. I'm able to glimpse ~40V, ~15V, 10V, and then values below 9V. It does stabilize to 0VDC. Interestingly, when I power the unit off, I see the same thing on the - side - it goes to -0L, and then -44V, -15V, and then stabilizes eventually getting back to 0VDC.
I went back to retest the resistance values, and everything is the same as it was before, with the following exceptions:
7: 0L (which I'm guessing is okay because this leads into the Speedball)
9: 0L (which I'm guessing is okay because this leads into the Speedball)
B3: 0L
B6: 0L
I can't figure out why B3 and B6 changed, but I have to guess that has something to do with the problem I'm seeing. Any thoughts?
Appreciate any assistance with places to start troubleshooting - I'm not even sure where to start since the rest of the measurements are okay.
Thanks!
JP