I had tried "test mode" before, and just repeated it again now. It still will not spin up at all, and still gives me a no disk error. It consistently acts like it does in non- test mode. I can spin it manually and the little flashing arrow, and tracking light briefly come on then it goes to "no disk" on the display and i have to ground the test mode point momentarily again to reset it.. Still no spinup. Is there a test point or voltage to look for that goes back to the power supply to trigger it to send volts to the spinup motor? I noticed that wiring from the supply is direct connected to the spinup motor.
I did now just check for voltage to be present on the wiring that goes to the disc spinup motor while it breifly said "play" on the front display in test mode.. There is no voltage being triggered from the control board to go down that line from the power supply while play was on the panel.
I have not yet been able to find a scope to borrow, and mine is still down.
I had an analog and a digital meter on A., C, and RF and there was no signal on A or C at all in "ac" mode, even on a very small setting of milivolts. There was just a constant .8v dc, with no ac indication.