24" display; Built-in iSight Camera, Microphone, and Speakers; 1920x1200 resolution. Released October 2008, identified by model number A1267.

50 Questions View all

Black Screen with Sound

I used to have my Mac Mini (2009 edition) connected to my living room tv. Since we recently upgraded the surround sound, I was wanting to connect it back to my 24" cinema display in the office, but when I connected everything and powered on, I'm not getting any picture. Just a black screen. I've done minor troubleshooting using my Mini and my Air. The mini still connects fine via mini display port to my tv, and my air will transfer sound to the cinema display via the usb. Is there a way to determine if the display port connection on the all-in-one cable to the cinema display is bad? Or at this point am I forced into trial and error with swapping out parts? Please let me know if you have any ideas. Trying not to buy a new display in new parts. >.<

Answered! View the answer I have this problem too

Is this a good question?

Score 2

Comments:

Hi everybody.

i have the same bug and i looking for a resolution.

I have black screen but with a magnate torch, i see the screen make a very light display.

The sound is ok. USB also.

my mac recognize the screen.

when i plug the monitor, everything is ok for 1sc and after... black screen.

sometinmes, everything are ok for few days.

Have you a idea ?

PS: excuse my bad english, my mother language is french ;)

by

Add a comment

2 Answers

Chosen Solution

We've seen a lot of these displays fail more recently. The issue is, there isn't really a reliable source for the parts of these displays. Apple class all the cinema display models as 'Vintage' now (even the thunderbolt 27" model), so the only option is after market sources, which dry up pretty quickly...

That being said, if you shine a torch on the display and can see a faint image, and the mac can see the external display as being connected (check under the 'Graphics/Display' tap of the system profiler, or system information panel. it should show up showing the display as being connected with its resolution noted, even if the external display is blank)

if that is the case, then it is more likely to be one of 3 things. The LCD having failed, the internal logic board or the PSU. The all in one cable does wear and fail on occasion, but in our experience, this causes intermittent connection issues, so it wouldn't be showing up in the system information panel, and wouldn't be showing a faint image.

Basically, 2 feeds go to the display, so its helpful to know which has failed. You get backlight feed, and you get image. If you can see a faint image, then your backlight feed has failed.

Same goes for your display @schwinny. It is likely that your backlight feed is beginning to fail, so it will need tracing, but its a separate issue to the image feed, which is unaffected from what you've noted in your symptoms.

I hope this helps.

Was this answer helpful?

Score 2
Add a comment

Well I'm not sure if this is the case in apple monitors but in most lcd monitors the first component to go bad is the capacitors in the power supply. This will cause the display to turn on very dim and take several minutes to brighten up or to display black. If you think the monitor is at fault and you have checked your connections thoroughly it might be worth taking it apart to look at the capacitors. If they are bad they will sometimes have a bulge on the top, they should (when working correctly) be perfectly flat. They can go bad without the bulge but this could be a good place to start.

Was this answer helpful?

Score 1
Add a comment

Add your answer

Dwight will be eternally grateful.
View Statistics:

Past 24 Hours: 4

Past 7 Days: 18

Past 30 Days: 82

All Time: 1,215