Mini Displayport issue?

Can someone tell me if there is a genral issue wiht the displayport adapter on the MacBook Pro?  I hook it up to a DSP to HDMI with no signal.  Then swith monitor and cable to DSP to DVI - worked great for about 1 hours, then came back and nothing.  The monitor works fine on other compurtrs.  ARe there any enw fixes for the DSP connector?  PLease help. Thanks - DAVE

with no signal
Most displays make no distinction between:
No signal whatsovere
A signal that is out-of-range
One important intermediate step is to use:
About this Mac > ( More Info ) > Graphics/Displays...
... to see if the Make&Model of the display is seen by the Mac:
-If yes, look at resolution issues and turn off Mirroring until you get it working
-If no, then look at cabling issues, as you have not yet established a connection.
For some displays, the default approximation of DVI or HDMI signal levels is not quite good enough, and an ACTIVE [powered] adapter must be used.

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