HT4279 cinema display backlight repair

I have a 27" display that the backlight seems to be failing on. Some mornings the display comes on just fine but others it either fails to come on or it comes on very dimly. I suspect the LED backlight may be on the verge of failure but was wondering if anyone had any experience with Apple repairing these (including some estimate of cost?). If you power off the monitor and restore power, it comes up fine nearly every time. Have not upgraded to Yosemite on this computer yet due to issues (Safari crashes) on the newer version. I would be willing to repair the monitor myself but if it's not about 1/2 the cost of a new monitor I would probably just have Apple do the repair.

Since you confirmed that it is not the Mac. I requested that your posted be moved to the Cinema Display forum
Cinema Displays
BTW, this is the Mac Pro Desktop forum

Similar Messages

Cinema Display backlight control

Hello,
for a kiosk application I would like to turn off the backlight when no vistors are present, to conserve power and the backlight. I have the remote sensing and everything else in place (running Adobe Director), but how can I turn the backlight off and on remotely? – Shades.app etc. don't do the job, because they just "blacken" the display, without actually affecting the intensity of the backlight itself.
several Mac OS X (10.4.10)

...found my own solution. I let the display go to sleep using the energy saver ("Put the display to sleep when the computer is inactive for...").
To wake up the display, I used zScript to make Director scriptable, then sent a "key code 53" command to the system events application. This simulates a key press (in this case the "escape" key) which wakes up the display. Took a couple of hours of fiddling, and the zScript xtra costs $$$ if used commercially. But the demo works fine for my non-commercial project.
several Mac OS X (10.4.10)

20" Apple Cinema Display - Dim Backlight Fixed! (Sorta)

Well... as many other Apple Cinema Display owners have experienced the infamous dim backlight with the "short short long blink" - I have some wierd news to report...
Mine got fixed last night on total accident.
Last night there was a huge storm in my area and there was a lot of lighting and massive down pour of rain, stay with me honest I have a point.
My G5 was on last night while I was asleep in the other room within visual range of the display. There was a lighting strike on my property about 20' from where my office is which is on the corner of the house. The lighting hit the tree and send an obvious surge of power into my house and zapped some electronics.
Wireless router, cable modem, and thermal label printer all bit the dust - and the USB ports on the back of the ADC display. I jumped up from the sleep and saw the monitor light up out of screen saver because the house shook so hard. I ran over to the machine and tried to move the mouse and keyboard and no go since the USB ports are burned out, but the monitor was FULLY LIT UP. I have unplugged the monitor and plugged it back in multiple times, turned the machine off and let it sit and it still is working great minus the USB ports.
My hunch is this... because of the dead USB ports which are no longer drawing any power, is it possible that the USB ports are the cause of the "short short long blink"?
My screen went dead initially when it was in a deep sleep mode and NEVER came out of it until now.
So basically what I am suggesting is that someone try and unhook the USB (if it is even possible) and see if that helps with their display - if not, I guess I am just lucky and my Apple Cinema Display is just lucky to not have fully bit the dust.
-Jonathan
Dual PowerMac G5 Mac OS X (10.4.10) 20" Apple Cinema Display (Clear)

We can't answer that because that's going to depend on who you talk to. By the book, AppleCare covers defects and not accidental damage, so you could get a No answer if they determine it was not due to a defect. But realistically, sometimes you talk to someone who decides to use their ability to authorize an exception and get it fixed anyway. The only way to find out is to call AppleCare.

Self repair apple cinema display 65W power adaptor?

After a power outage, I have discovered that the 65W power adaptor (A1096 661-3760) driving a 20" apple cinema display is no longer working. A different brick from another display works fine. I was wondering whether I might be able to service this power adaptor myself? Are there online guides for dissembling the adaptor and checking if maybe a fuse has blown?
Thanks for any advice...
Paul

My guess is not even apple bothers to repair something like a power adapter. A google search shows it can be replaced (albeit not cheaply). It's probably dangerous to fiddle with too since you have line voltages to deal with.
You could call a place like Mac-Pro to see what their opinion of repairing it is. They sell that adapter but also repair mac stuff.

Backlight bulbs in Cinema Displays

Does anyone know how many bulbs there are, where to get / replace, part number, etc. I have a 20" Apple Cinema Display, and the backlight is dimming on the top half.

Does this thread contain anything useful?
(14421)

My macbook is back from repairs. It is not working with my apple led cinema display. It was working prior to the repairs on the laptop. Is there a setting I don't know about that might have been changed?

My macbook pro is just back from repairs. It is not working with my apple led cinema display. I have followed the directions in the cinema display manual. am I missing something?

Take a look at the Displays preference panel to see if everything is ok, particularly the resolution and refresh rate. Displays will probably try to put the panel for the ACD on the ACD where you won't see it. So click "Gather Windows" to get the ACD panel on to your macbook.
One more thing, make sure you fully seated the mini displayport plug. They can be sneaky little devils in that they need to be fully pushed in.

Repairs for 30 inch cinema display

How can I find out if my 30 inch cinema display can be repaired?
Thank you

The Apple display requires digital input. Dell has a 30" with analog and digital inputs
<http://accessories.us.dell.com/sna/products/Monitors/productdetail.aspx?c=us&l= en&s=bsd&cs=04&sku=223-4890>

Cinema Display not detected

I got my 20" Cinema Display back from repair today (backlight problem) and now I can't get my MacBook Pro to detect that it's attached. While it was at the repair center, I used a CRT as a second monitor. So today, I just closed the MBP (didn't shut it off, which I think is what cause the problem), disconnected the CRT, connected the ACD and opened the MPB back up. Completely black screen, with the little LED on all the time.
So, troubleshooting:
- The MBP still detects the CRT
- ACD is detected by both a G4 and G5
- A different 20" ACD is ALSO not detected by my MBP
- Reset NVRAM and SMC
- Booted MBP in safe mode
- Booted MBP from startup CD
- Tried various resolutions while the CRT was connected, thinking maybe it was stuck on one that's not compatible with the ACD
- Moved and recreated the com.apple.windowserver.* files
I'm running 10.4.9 and here's what the graphics/displays info says, WITH the Cinema Display connected:
ATI Radeon X1600:
Chipset Model: ATY,RadeonX1600
Type: Display
Bus: PCIe
VRAM (Total): 256 MB
Vendor: ATI (0x1002)
Device ID: 0x71c5
Revision ID: 0x0000
ROM Revision: 113-xxxxxx-086
EFI Driver Version: 01.00.086
Displays:
Color LCD:
Display Type: LCD
Resolution: 1680 x 1050
Depth: 32-bit Color
Built-In: Yes
Core Image: Supported
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Display:
Status: No display connected
Been messing with this for four hours, and I still have a blank display. Any other ideas? From one thread someone mentioned replacing the logic board fixed a similar problem.
MacBook Pro Mac OS X (10.4.9)

UPDATE:
I just got back from my visit to a mac genius. Of course Murphy's law was in full effect! With my MBP connected to the cinema display in the Mac store, everything worked as it is supposed to.
Well, I rush home thinking that maybe mine would now work - - no luck! He did suggest that I try connecting analog with the provided dvi-to-vga adapter. This suggestion DID work! BUT, I want my video digital! That is why even though I was happy with the iBook G4 that I bought last year, I wanted digital video + expanded desktop!
I think I will make another reservation with the Mac Genius, but this time, bring my monitor. Will keep you posted...

27" Cinema Display - Black Screen

I have two of these 27" displays. One display works great. The other display has a black screen. It has power and will play music through the speaker and USB works. When I hold a flashlight up to the screen I can see what should be showing brightly and even read it (takes some work to read). When connected to the laptop it's recognized in the Display preferences etc.
This problem started by the screen going black from time to time. I could get it to come back on by unplugging etc. Then it went black and it won't come back.
I don't want to pay a bunch to repair. I'm very capable of doing the repair myself and with the tutorials online I can get it done. I've read numerous threads on this and several things are mentioned as the problem:
Blacklight or driver need replaced
Logic Board needs replaced
Power supply needs replaced (I don't see how it could be this since sound and stuff work on the display)
PRAM or clear preferences etc
I believe it's probably the backlight or driver and/or the logic board. I just don't know how to diagnose which it is. Any suggestions greatly appreciated.

I have the same issue. This a common issue with Apple's LED Cinema Displays since they first launched to replace their CCDL LCD's, it's not your system. I spent three years, using 2x 24" LED LCD"s that were problematic since day 1; power supplies and LCD panels replaced 2-3 for each. My AppleCare was due to run out in Oct., so I called AppleCare in May. Within 24 hours, they approved 2 new 27" LED Cinema Displays. Everything was working perfectly, until last night. One of the 27" displays shut down. As a communications and tech consultant (and former Apple Corp employee), I reset my Mac Pro's NVRAM and SMC, tried the display with my MacBook Air and Mac Mini, all three systems will not detect it. From my experience with Apple's horrible LED LCD's, it's definitely a power supply issue. I run my system off an APC SMART-UPS 1500 Sine Wave for servers, and my other display and 6-Core Mac Pro5,1 are fine.
Really disappointed in Apple's lagging quality. Before the LED LCD's I owned 2 23" CCFL LCD's that lasted me ~8 years before burnout began, which is fantastic. I don't know who produced the panels and internal components, but Apple had better get this together.
The thread I posted is below, hope this gains traction:
24" and new 27" LED Cinema Displays constantly malfunction, anyone having similar issues as below?

What do the power light blinking codes mean on cinema display?

I have a cinema display on my G4, and about a year ago or so I had to replace a backlight due to a failure. Tonight I see that the power light is blinking again in a repeatable sequence, and I am wondering where I learn what the sequence is telling me about the nature of the problem?
Power output of the display is reduced again, and I am hoping I do not need yet another backlight repair.

The meaning of the blink codes is not stated in the manual, but in this knowledge base article:
http://docs.info.apple.com/article.html?artnum=88366

Troubleshooting 24" Cinema Display problem

I have a 5 year old 24" Cinema Display connected to a Mac Pro using Mini DisplayPort. Several days ago I connected a Kanex Mini DisplayPort and USB Extension Cable. Everything was working fine until yesterday when the display faded to black while I was working. I tried plugging the monitor directly into the Mac and it seemed to be fine. Later on the same problem happened. Now I am unable to get any video on the screen. I tried a different monito and that is working fine so I know the graphics card is OK.
Any ideas about what could be wrong? Is this a fixable problem? Did the extension cable fry my monitor?

The 5mm LEDs that I used for the initial repair can be purchased from any electronics component supplier. Avoid Radio Shack at all costs. I wouldn't recommend using 5mm LED though. I've purchased some 5050 SMD LEDs for the next rendition. I will report back later in the week with my my results and possibly some photos. It's not somethign you want to attempt unless you're confident in your soldering skills. You'll also need to do a little math to figure out how to configure the LEDs and give them the right resistor.
Here are some photos of the 5mm LED job. I parralelled 3 strings of 8 LEDs wired in series and powered them directly from the 24v rail of the power supply. These LEDs are held in with hot glue. On the next repair, now that I know its worth while, I'll use the backlight driver from the logic board which will give me brightness control again. Pardon the mess, I had been working on wiring up that strip for a couple of hours. It really helps to have an adjustable lab power supply on the bench to test as you go. Also, note the hot spots in the bottom right and left corners of the screen. They are caused by misaligned LEDs.

How to connect my Cinema Display as a second monitor

I just purchased a new 27-inch iMac, and I explained to the Apple folks that I had a 17-inch cinema display (silver clad model) that I wanted to connect, for a dual monitor set up. They told me just to get the Mini DisplayPort to DVI Adapter, but I was surprised to realize that's not going to work.
Can anyone tell me how to do this, and what connector is actually needed? I have the big old white power brick that I bought to daisy chain my old 17 and 23 inch displays with my old configuration (Mac Pro).
Or can you not have a second monitor with an iMac?
Thanks in advance.

Hi Cathy,
What connector is on that Cinema? ADC, VGA, or DVI?
Video Card:
GeForce GTX 675MX
VRAM Type:
GDDR5
Details:
This model has a NVIDIA GeForce GTX 675MX graphics processor with 1 GB of dedicated GDDR5 memory. At the time of purchase, it can be custom configured with a NVIDIA GeForce GTX 680MX with 2 GB of dedicated GDDR5 memory for an extra US$150.
Standard VRAM:
1 GB
Maximum VRAM:
1 GB*
Built-in Display:
27" 16:9 Widescreen
Native Resolution:
2560x1440
Details:
This model has a 27" LED-backlit 16:9 widescreen TFT active matrix display with IPS technology and a native resolution of 2560x1440. Apple also reports that the "cover glass is fully laminated to the LCD and an anti-reflective coating is applied." Previous Aluminum iMac models have the LCD covered by glass. The company no longer reports viewing angle or contrast ratio, however. Site sponsor Mission Repair offers free diagnosis of iMac hardware problems and a 24-hour repair service for this iMac. Display replacement, keyboard replacement, a hard drive upgrade service, and more are provided.
2nd Display Support:
Dual/Mirroring*
2nd Max. Resolution:
2560x1600 (x2)
Details:
*This model can simultaneously support two external displays up to 2560x1600 via Thunderbolt.
http://www.everymac.com/systems/apple/imac/specs/imac-core-i7-3.4-27-inch-alumin um-late-2012-specs.html

Mid-2012 MBP with 27" Cinema Display SCREEN GOES BLACK WHEN USING USB PERIPHERALS IN DOCK

I haven't been able to find any straightforward answer as to why this is happening and it's becoming one of the most infuriating things in my life, impeding my workflow and costing me unmeasurable time in waiting, rebooting, screwing with cables, etc.
I use my MBP as a DAW for multitracking live audio events to ProTools through a digital console where I work. Here's my gear list that I use every day:
Mid-2012 MBP - Yosemite, 8GB, i7 quad 2.5, mechanical hd
HengeDocks dock for my exact model machine - has set-screw jacks for CinemaDisplay power, Tbolt, FW800, USB, USB, SDcard, headphones, etc
USB wired keyboard
Anker 1x4 USB3.0 hub - I have a TimeMachine 1TB drive, 3TB project backup drive, audio interface and MIDI I/O or PT iLok, depending what I'm working on
Magic Mouse (BlueTooth)
Here's what's happening:
SCENARIO 1 - I insert the CinemaDisplay (cD) power connector and TBolt plugs into the dock, tighten the set screws, close the lid of my MBP (already logged into Yosemite & linked with MagicMouse [mM]) and stick the MBP into the dock... everything comes up on the cD and I can go about my day. At this point, I can plug the USB hub into the back of the cD and the system sees the hub & all peripherals listed just fine.
SCENARIO 2 - Install cD powercon, TBolt connector, USB3 hub, USB keyboard into the dock, close the lid on MBP (again, logged in), insert into dock... cD comes up, looks great for about 15 seconds then goes completely blank. No response from key presses, mouse clicks, threats with a hammer, etc. Then, of course, I have to yank the MBP out of the dock, which hard-disconnects the external drives (backup and TimeMachine... good for them, right?) and causes the MBP to flake, thinking it's still in the dock, then not, then logging me out & requiring a password (not a big deal- I deal with copyrighted stuff, so passwords aren't the issue).
***EVEN IF I DO NOT PLUG THE USB3 HUB INTO THE HENGE DOCK, THE cD STILL GOES BLANK AFTER 15 SEC... IT ONLY SEEMS TO LIKE THE TBOLT AND POWER... NO OTHER PERIPHERALS (fw800, USB, etc)***
It seems like the MBP freaks out when the lid is closed and there are USB/FW peripherals plugged in while using a secondary TBolt display as the main output... seems stupid... if I need a closed-lid dock, the MBP shouldn't care what I have plugged in while the lid is closed. I had the same issues with Mountain Lion & Mavericks and now it's being repeated with Yosemite.
My goal in this exercise is simply to free up the USB jacks on the back of the cD for two reasons - #1) from time to time, I have extra things to plug in and I don't want some massive USB 1x8 hub on my desk... looks stupid; #2) the bottleneck created by plugging in the hub to the back of the cD (another hub via TBolt) almost triples the time required to back up/copy files. I move files from system drive to backup drive & back VERY often due to the nature of my job... speeding up this process would greatly improve my efficiency in the matter. Why would Henge create a dock with all the jacks on it to allow someone to plug into a cD that won't frickin work with said cD? Every other dock I've found makes the user stick the MBP on a slanted, goofy-looking stand and have the lid open or something dumb like that... what I have is the setup I need... just need the USB stuff to work while lid is closed and everything from powercon & cD to USB3 hubs will work without making the cD freak out.
Any ideas out there?

Have now taken the 27" display into the repair shop and after 24 hrs got the phone call - "appears to be nothing wrong with it, will check again on Tuesday and let you know".
I can't seem to find anything on the net describing a similar problem. Everything is working fine right now with the Mac Pro connected to the older 20 inch Cinema Display. In fact, everything seems to be working about a second faster.
I was told by the local retailer that Apple no longer makes the 27 inch LED Cinema Display product and the new display, the "Thunderbolt" will not work with my 13 month old Mac Pro.
***??? In 20 years of owning Mac equipment, this is my first major "uh-oh".

Cinema display 24" burned and died

I wonder if anyone can give me any advice. I bought the £650 24" Apple Cinema Display 18 months ago from the Apple Store. On Friday I got a burning smell and it died.
Took it into the Apple store on Monday. They said it is out of warranty and that they could repair it for £500 - LCD fail.
Does anyone know if I have any consumer rights with this? Surely I should expect a £650 monitor to last longer than 18 months? At the time of purchase they didn't even offer me an extended apple care warranty.
Apple products usually have such long lives. I have an 8 year old ipod and 4 year old MBP and they are both still going strong!

Update: This may be useful for anyone else who has had the same issue.
Took my display to an independent but Apple Authorised repair centre where I had them run a diagnostic test on it. Turns out it was the logic board which had burnt out which they said was a manufacturing fault.
So the £500 repair quoted by the Genius Bar actually turned out to be £80.
I also had this repair done free of charge as I used my my consumer rights - the Sales of Goods Act 1979. This applies to the UK only and should cover you for up to 6 years.
It also states on the Apple warranty page that in the EU they cover items for 2 years if it's proved to be a manufacturing fault.
Thanks Apple, my cinema display is now back on my desk
Hope this post may help someone else in the same predicament!

Cinema Display 30" problem

Hi
I have a 30 inch Cinema Display from 2006-ish. I have not used it for a while and when i powered it up again a few days ago it was kind of broken.
There is no image from my Mac, only these vertical lines (check the photos). The lines change a bit if I move a window around and using a different Mac does not help.
https://www.flickr.com/photos/69744417@N06/15415125321/
https://www.flickr.com/photos/69744417@N06/15231698748/
The screen itself appears to be intact. Does anyone know of anything I can try to get it fixed? Or replace a part or two?

If you're not yet sorted - I had similar prob with my then 1 year-old iMac - AppleCare swore blind it wasn't a hardware problem and told me to wipe my hard drive and re-install EVERYTHING...!
Fortunately, I didn't believe them, and hunted thru various forums...and identified that, as I thought, it WAS a hardware prob - and the next AppleCare guy acknowledged it and sorted the repair, finally!
The heat sensor was from a bad batch (that it turned out Apple knew about and could have identified immediately by the serial number, so could have saved me days of frustration and wasted time) and it was erroneously turning the Mac off as what it perceived was a safety thing. Hope that helps...

HT4279 cinema display backlight repair

Similar Messages

Maybe you are looking for