[rescue] Ultra1 Model 170 troubles

[Alexander Makarov]

I'm trying to reanimate my Ultra 1. It worked well for a long time,
but silently dead recently.

I've plugged rs-232 cable and Sun keyboard. When I press Stop-D while
turning on power, looks like POST is run. Caps Lock light is flashing,
but I can't see anything on my terminal. Terminal settings is
9600/8N1.

When Caps Lock light finishes flashing (after about a 30 seconds), all
lights on keyboard flash shortly on and off, and not responding anymore.
When Sun keyboard is unplugged, I still have no output on serial.

Any suggestions?

 Alexander