You have may be broke the system cable, the dvi-d cable is broke...
In my pdp-5030hd have the same problem, probe changing the only the dvi cable and works perfect...
The monitor blinks 3 red and the 4 blinks still in red...
Now i will try to put in the dvi-d input another source like a pc...
You need always the Pdp03u box for control...
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