Attaching a monitor to a Macbook

[WJG]

I have a Mitsubishi Diamond Pro 2070 monitor that I am trying to attach to a Macbook. The Macbook is aware of the monitor, I have tried mirror and non mirror display options, but the monitor remains blacked out with just a flashing yellow light. I have tried to match the resolution etc. but to no avail.
Can anyone cast any light on this dark monitor?

Thankyou

 

[BlueRevolution]

So you're connected via VGA?

Can anyone cast any light on this dark monitor?

Har har.

 

[scienide09]

Can you switch the 'source' on your monitor back and forth between analogue and digital input. Mine needs that, and it defaults to analogue when it hasn't been used for a while.