> Actually, the screen doesn't go "black", just extremely dark, but one can see what is there very dimly.

That's the same thing you'll see if you turn your screen brightness down to its lowest possible setting.

I'll suggest that you run Apple Hardware Test, although I don't know what, if anything, it may tell you.

For more ideas you'll have to wait for more of America to awaken.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire