Do you have tech tool pro? That runs through hardware tests. Though I  
do not know if it covers external screens. Other than that, I can't  
help sorry.

David


>
> David Lazarus wrote on 27/1/09 at 00:28
>
>>
>> I read somewhere that there is a fault with the cable so do not be
>> worried about calling Apple.
>
> that can't apply in my case. It's a VGA adapter not DVI. If they
> sold it to me it must be for using a VGA display! and it worked
> for weeks (months, now) fine. something has failed. There's no
> input detected by the monitory
>
> It just struck me that the Hardware test did not test the video
> so I ran it again. It only seems to test the memory. I'm sure in
> ages past it ran video tests though. Does this behaviour sound
> right? it reported no problems with the memory...but nothing else!
>
>
> >


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