Hi everyone:

Thanks so much for your replies.

I have unfortunately been unable to eliminate the posibility that all
of this is caused by either of the 2 ghosts that live here. I've asked
both, but neither one of them is talking.

Putting that possiblity aside, let me add some details and thoughts:

1) Under normal operating conditions, the light can be turned on by
either pressing the "light" button on the control panel or by opening
the door. There is a punger type switch built into the oven frame, at
the top of the unit. Holding down the punger turns off the light, even
if the oven door is open, so I believe that it's the only door open
sensor. Depressing the punger even slightly turns the light off and I
can pull the door open slightly without the light coming on. So I
don't think it's a problem witht he door becoming open, it has to be
very open to turn on the light.

2) The last time this happened I tried jumping up and down next to the
oven and banging the counter top that it above the oven. No change,
just 1/2 second on 1/2 second off. Jiggling the door left and right
didn't do anything. Only way to stop it is to open and then shut the
door.

3) I tried pushing the door closed more, I mean really pushing on it,
still no change.

4) Afer jumping didn't do anything, I tried pressing buttons on the
contol panel, looking for any change.

a) Hitting "Light" button turns the light on constant. As soon as I
press the button again, the flashing starts again.

b) Turning the oven on cook, starts the oven, (can't remember for sure,
think flashing continues), and the temperature setting flashes between
the temp and the word "DOOR" indicating that the door is open. If I
open the door all the way, "DOOR" stays on permanently.

5) I also tried leaving the door open, not when the flashing was going
on, but when the lights were initially off. I left it open for 3 hours
and the light just stayed on solid. This eliminates the possiblity
that the flashing it some kind of timer saying "hey stupid, you left
the door open."

6) Now I'm no electrician, but I'd think that a loose connection would
cause flickering of the lights, not a constant 1/2 second on 1/2 second
off cycle.

Thanks!
Ken

FYI- As suggested I've also posted this question to
sci.electronics.repair and uk.d-i-y.