Video signal splitter unrecognized DVI - two different devices! Why?

Looking for answers - replaced a motorized DVI splitter that has worked well for over a year - using HDMI > DVI

adapter to connect Mac Mini i7 2012, OSX 10.8.5, HDMI port, to the Aluratek DVI splitter.  Configuration below - worked fine for about 2 weeks.  Then came after a few days of inactivity - computer but the display mode 'sleep'... would not wake up. removed the splitter and connected live - monitor (s) work well.   This same issue is why I replaced a divisor of model "TrippLite" - impeccable/no questions for 12 months, and more with this one.    The separator indicates its getting the video signal from the Mac... and video shows displays connected... but see monitors/don't receive it no signal.  I tried to lower the display resolution - no impact.  Have reset NVRAM, SMC several times... reconnected, the range cable several times... tired MiniDisplay Port Adapter > DVI... no luck.  ANY IDEAS MUCH APPRECIATED!  It's in a studio where I need to have dual - in a second workspace - splitter necessary because the distance to the extreme-monitor is too long for a splitter - liabilities

Technical support said mfgr this Mini graphics card can possibly work for "a while" then stop recognizing the defendant of... How do I?  If we read a single monitor, directly - connected is too much coincidence for a second separator developed the same problem as the other we had - I don't know if there is some thing in the Acer monitor settings that would have an impact on anything whatsoever but I doubt - this new separator 'fixed' the old man a problem after it was connected - and now signal is not recognized through it after a few weeks.

If you have a multimeter, check voltage on his block of POWER & with 2 will check for a ground loop...

https://en.Wikipedia.org/wiki/Ground_loop _ (electricity)

Tags: Mac

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