Hi,

Sorry for the whimsical title, but it's true, one of my SE/30s has somehow broken in such a way that the screen is white with permanent scan lines (adjusting the cutoff doesn't get rid of them).

I have refreshed just about every solder joint on the analog board (which I figured couldn't be bad anyway), and touched up a few joints on the logic board because it would momentarily cut power if moved a certain way (which I figured meant an intermittent connection in the connector somewhere; I assume I have fixed it, since this particular behavior no longer occurs).

It all seemed to start when I broke the CRT after discovering a broken solder joint on the video board. I subsequently replaced the CRT with a severely burnt-in, but working spare, and repaired the broken joint.

I turned it on, and it worked for a few seconds, perhaps a minute. Then, as I was reaching over to adjust the image, it displayed a Sad Mac (death chimes and all). So I reset it.

After that, I have been unable to get the thing to work properly.

I suspected the video board was damaged somehow, so I replaced it with a spare. Same problem.

Then I re-soldered almost everything on the analog board. I got a faint and highly washed out picture with the cursor, but then it faded away to solid white after a few seconds.

When this problem first arose, I noticed some disturbing arcing going on between the lower right (from the front) CRT mounting lug and the internal frame. Could that have damaged something?

I doubt a broken logic board could cause this problem, though.

Any ideas?

c