bigmessowires
Well-known member
My IIsi and IIci are both having trouble booting, with the same symptoms. Both systems worked when I put them in storage about 2 years ago. Both logic boards have been recapped. The IIsi power supply was also partly recapped. I don't remember about the IIci power supply.
When the power button or keyboard power key is pressed, the computers repeatedly turn on and off a couple of times per second. After many attempts I did finally get the IIsi to boot, and it runs for a while, but then spontaneously turns off after 5 minutes or so. And if I do a normal shutdown from the Finder menu, the IIsi reboots instead of shutting down.
Any suggestions where to start looking? Is this a likely PSU problem, or maybe something else?
When the power button or keyboard power key is pressed, the computers repeatedly turn on and off a couple of times per second. After many attempts I did finally get the IIsi to boot, and it runs for a while, but then spontaneously turns off after 5 minutes or so. And if I do a normal shutdown from the Finder menu, the IIsi reboots instead of shutting down.
Any suggestions where to start looking? Is this a likely PSU problem, or maybe something else?