Mac Mini & Apple Cinema Display = Red screen!

[YetiMac]

Hi everyone,

Has anyone experienced this problem before (photo attached)? My Mac Mini / Apple 20” Cinema Display screen suddenly turned red with no warning! But If I take a screen shot and save it to photos, and view my photos on an iPad, the screen shot appears fine in tonal balance?

I have a late 20102 Mac Mini 2.3 GHz Quad-Core Intel Core i7. This is connected to an Apple 20” Cinema Display via HDMI-DVI adapter. All running Catalina successfully. I have tried another Apple 23” Cinema Display and exactly the same scenario, so I know it is not the screen? For ref, no Thunderbolt screen here to test that port output. Wondering if the problem is localised to an issue with HDMI port or the Intel HD Graphics 4000 card in general?

This morning I’m going wipe the Mac clean and do a fresh install of Mac OS to eliminate that possibility. Other thoughts were faulty HDMI-DVI dongle? But, I did connect the Mini directly via HDMI to a Panasonic Plasma TV last night, and initially got a picture, then it flickered on and off to white noise.

Any pointers would be most welcome!

 

[opeter]

If the other monitor/TV shows similar simptoms, I would say it is either the HDMI output or the GPU (Intel HD4000).

To be honest I didn't see any faulty integrated graphic cards yet. However I had an oportunity to see a dead HDMI output.

 

[Fieldstone]

I have a Apple Cinema display from 2006 and its connected with a 2018 Mac Mini with a APPLE HDMI TO DVI ADAPTER and a BELKIN USB-C to HDMI Adapter .

 

[YetiMac]

Update: A fresh Catalina install seems to have stabilised things somewhat, and I now have a normal screen, and the red haze has gone. It was flickering red, occasionally yesterday when it was getting hotter (backing up), but now seems fine. But, I am going to strip the Mini down and investigate further. I do wonder if the HDMI-DVI dongle was at fault?

 

[MultiFinder17]

My money is on either a bum dongle or the port being wonky. I have a 2012 with a slightly loose thunderbolt port that does the same thing if it’s pushed a certain way.