Is it possible that the power supply is "ticking" after you try to turn it on?*snip*
There is an adjustment for the power supply, through a small hole near the middle of the big side. You normally have to take the PSU out of the Lisa to adjust it. (and repeat until the voltage is right) Turning the adjustment clockwise decreases the +5 volt output.
The pot (r11) was set at about the 11 o clock posotion, it turned to the 1 o clock posotion. I reinstalled all the cards and the drive cage, but but did not power on. For giggles, I also tried the 9 o clock and 6 o clock posotions, but they all had the same result... a whump from the speaker.
I put my ear to the back of the machine where the PSU is and listened. When the machine is 'off' there is a very faint hum. When I press the power button, there is a quick hiss sound (hsssssssst).
Just curios, what is the other pot on that riser card for?
-Jason
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