So, if the cigar lighter works, (not the "power point", which is a different fuse), then there is possibly a cable failure to the Gryphon. What year is your truck? Is it a pre-04 model?
You could also have loose or defective wiring in the OBDII port itself.
And, I need clarification - is the screen BLACK or does it light but you can't read the "print"? If it lights, you may need to adjust the contrast: [Menu]->[Display]->[Change LED Color]->Contrast].
Did you recently try to update firmware in the Gryphon? A blank green screen can be the result of a download failure during an attempt to update the Gryphon's firmware which causes the firmware to be erased and not updated. Now, the Bootloader has nothing to boot to, so the screen stays green with nothing else displayed. The vehicle is not at fault.
The cure is to reset a download which reprograms the firmware and calibrations. You'll have to contact PHP for this procedure.
- Jack
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Sat, December 10th, 2011, 12:42 PM
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