Snow Leopard Black Screen Disease Update

[Update Oct. 3 - see this later post for the solution to my problem. Doesn't mean it will work for you, but it seems to have solved my problem.]

This video will show you the ongoing problem I've had with my MacBook since installing Snow Leopard. You can see all the posts tracking this for the last couple of weeks.

In short, Stephen at the Apple Help and I have been talking back and forth trying to work this out. We reset the SMC and the parameter ram (no, I don't know exactly what that meas either, just that he walked me through doing that), I took it to the local MacHaus for a hardware diagnostic and nothing was wrong there. We reinstalled Snow Leopard. Still got a black screen. I finally noticed the problem only happened when I left the computer or stopped using the keyboard AND the adapter cord was plugged in. When it was only on battery (or when it was at the shop and they used a different power cord) the problem didn't happen. Over the weekend I tested this hypothesis and on battery no problem. The three times I used the cord, it went black when I stopped typing a few minutes. I left Stephen a confirmation message.



So yesterday Stephen called to say he'd gotten my phone message and he was FedExing the new adapter.


This is what I found this morning. We thought he wouldn't be able to ship it out until today since it was 5pm in Dallas when we talked and that it would get here Friday. But I saw it was already on a truck in Anchorage at 8:30 this morning!






Here's the old adapter cord. Can this really be the problem? It only began when I installed Snow Leopard. How do the adapter and the software interact to equal black screen?






And here's the Fed Ex truck pulling up in front of the house. It's 11:30am Anchorage Time. (All this is happening as I'm doing this post.)


And here's the new adapter.

It's plugged in. I'll go eat something now and leave it to turn black. Or, hopefully, not. Then I'll finish this post.



20 minutes later: Sorry to report: I still have black screen disease.