HT2809: Mac Pro (Mid 2012 and earlier): Graphics card video compatibility with Apple DVI-to-video adapter
Learn about Mac Pro (Mid 2012 and earlier): Graphics card video compatibility with Apple DVI-to-video adapter
Q: No video from MacPro3,1 (2008) to NIKO SV3706 LCD TV via DVI to HDMI cable.
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Mar 22, 2015 2:46 AMby lllaass,Does the HDMI input on the TV work with another device?
Does the DVI>HDMI cable work on another device? Could be bad cable
Try resetting the SMC and NVRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
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Mar 22, 2015 9:18 AMby Ron Stephens1,Again - and sorry if this was unclear - I have tested everything in the signal chain (I'm a hardware repair tech - mostly audio gear) and it all does what it's supposed to do. But the TV, while it seems to know something is connected, doesn't seem to recognize the video.
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Mar 22, 2015 9:31 AMby lllaass,So you have not tested the digital output of the card's DVI-I connection. The digital connection seems to be bad but the separate analogue for DVI-I.VGA is working.
What happens if you only have the DVI>HDMI monitor connected during bootup If a bot screen shows that would indicate a software problem.
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Mar 22, 2015 9:40 AMby lllaass,Seems like the digital signal out of the DVI-I connection is faulty.
Likely time for a new graphics card
User Tip: Mac Pro silver tower (2006-2012) Replacement Graphics cards
new graphic card for Mac Pro 2008 3.1
What card is currently installed?
