On Tue, 15 May 2013, Jim Brain wrote:
I scored a reasonably good condition KII on eBay last week, which booted
but looked like it just needed some CRT adjustment (screen was garbled,
but in a small line at center, which suggest a simple pot tweak). Sure
enough, got it home, plugged it in, popped the lid, adjusted the pot,
and intro text.
Used teledisk to make a boot disk, and the machine booted!
Since I had it open and I was trying to check on the drives in the 4, I
disconnected the internal drives in the II and connected a K4 drive. On
power on, the drive did not even spin up, and so I pulled another Kaypro
to test. Does the Tandon use different voltages?
Now, tonight, I boot the unit, and the drives spin up but the activity
LEDs won't light up on init, and it obviously won't boot. A spare tandon
SSDD behaves the same. It appears the drive logic on the main PCB is
not operational now, though I can't imagine plugging a DSDD from a K4
would mess things up that much. Any ideas on where to start looking?
Have you checked the PSU voltages overall? Have you made sure nothing is
(I'm unfamiliar with Kaypro stuff)
brain at jbrain.com