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?
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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.

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

Backlight bulb change 20" Clear Cinema Monitor

I am replacing the backlight bulbs for the top of the screen and was wondering if anyone has or remember the color match of the wires?

The lamp itself should have no polarity, so it doesn't matter which way it is installed.

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...

Macbook crash on sleep after disconnection from cinema display

Hello,
I bought a black macbook core 2 duo a few months back as a replacement for a 1.5 GHz 12" powerbook G4, and I'm beginning to wonder if I made a terrible mistake as the Macbook frequently crashes on sleep which has caused a major disruption to the way I use my computer.
My work pattern involves pulling the computer out of its bag and opening it for between a few minutes and a couple of hours, before putting it back to sleep by closing it and shoving it back in its bag again, usually in a hurry, and usually several times each day. If I'm working at my desk, I pull it out of its bag, plug a keyboard, mouse and cinema display into it before waking it in lid-closed mode via the keyboard or mouse. I later sleep it via the power key, before immediately disconnecting the cables and putting it back in its bag.
The powerbook used to cope with this admirably, sometimes for two months at a stretch between restarts, and always with many applications and windows open. I had learned to expect that when I open the lid of my computer everything is there just as I left it, and more importantly that I didn't need to worry about saving everything before closing the lid.
The Macbook frequently crashes on sleep (regardless of whether I close the lid, use the key or menu or leave it until it sleeps itself), and have I narrowed it down to something that usually happens on one of the first few sleeps after I disconnect the cinema display. The macbook's backlight goes out on sleep but the display does not switch off (it can be seen, frozen as it was, if a light is shone on the display) nor the hard disk spin down, and the only response of any sort I can get is I can switch the white LED on and off by opening and closing the lid. This behaviour has always been the same regardless of whether safe sleep is enabled or not, although I have disabled safe sleep as I do not have the time or inclination to sit around waiting for 15 seconds for the disk to stop spinning each time I close the lid.
My question is, is there something wrong with my computer or is this normal for Macbooks where an external display is used? And if it is normal for macbooks is it something that is likely to resolve itself with future MacOs or firmware updates, or is it more fundamental than that?

Hello again,
It is hard to suggest something to do in this case, since intermittent issues are really difficult to diagnose. If I were you, I might try doing an Archive and Install from the install dvd that came with your macbook, as well as verifying the drive using Disk Utility on the install dvd. These are just suggestions and I don't know if they will change anything, but at least Apple may get more info out of knowing these were done to try and resolve the issue. If Archiving and Installing doesn't fix the problem (an OS software problem) and disk utility doesn't report any problems, it most likely warrants a trip to Apple. You definitely shouldn't have to put up with worrying about whether your computer will work or not every time you close the lid.

LIfespan of the Apple Cinema Display?

So... I've heard stories that the lifespan of the Apple Cinema Display is as short as 2-3 years?
Anyone have any firsthand reports of a happier, longer life for their ACD?
I just bought a 23" Cinema Display that happily has none of the problems I read about in other posts from a few years back about banding, pinkish tones, etc.
Can I hope for a longer life than 3 years from my ACD?
Thanks for any good news....

The most life limited component in an LCD is the flourescent lamp in the backlight that illuminates the whole screen. These are typically rated to have 25,000 hours of life. What that means is that, after 25,000 hours of operation, the lamp(s) will shine at half their original brightness.
Since 25,000 hours equals roughly 3-years of continuous, 24/7 operation, that may be the basis for you hearing that LCDs have a lifespan of 3 years. If you only run the display for 8 hours every day, then you would have 9 years of backlight life.

Trying to calibrate 17" screen AND Cinema Display 20"; 17" is way off

I've just bought an Apple Cinema display and calibrated it using Eye One software and calibration device. The color on the 20" seems accurate. When I create a profile on the PB the resulting color in NO WAY matches the 20" Display. I would have thought a calibration device would see the difference in color each display emits and produce a "neutral" profile. I know the PB display will have less luminosity and contrast, but the colors are so much warmer, redder.
I wonder if I should just do it by eye -- as all I really want is for them to be close (and us the 20" for photo retouching...
Any thoughts?
Thanks!

It can be very difficult to get an LCD monitor screen to match an LCD notebook screen because they are, in many ways, like cats and dogs. Because of the need to run for a reasonable amount of time from a battery, a notebook display has to be a low power device. They typically operate at less than 10 watts. Lacking that restriction, a desktop monitor can have more backlights, brighter backlights and thicker color filter material, which results in extended color gamut, compared with a notebook screen. So trying to make two such devices color match can be a fruitless exercise. I like your idea of eyeballing it. Ironically, you might get a better result than a color calibrator.

Some bad news about the dust issue occuring with new cinema displays

Hi. Just wanted to share what I went through today. I received a new cinema display for Christmas (early gift exchange with my gf) and was very shocked when I hooked it up to my MacBook Pro and noticed a long piece of dust under the glass (resembled a short piece of string). Once I confirmed it was under the glass, I packed up the display and brought it to the Apple Store in midtown. The Apple reps at the store were friendly and understanding and gave me no problems with an in store exchange request (the original display was purchased online). Upon receiving my second display, I hooked it up in the store to make sure there were no issues. Guess what...DOA. The Apple reps were shocked and slightly embarrassed and went to the back to get me another display. Once display #3 was brought out, we unpacked it and hooked it up to make sure everything looks alright. As soon as we turned on, 1 dead pixel and multiple pieces of dust behind the glass (5-6 dust particles). Once again, the reps say the dust issue is not acceptable and they go into the back to get display #4. Repeat routine and guess what...even MORE dust this time. Close to 9-10 particles throughout the monitor. Unbelievable! I ended up clearing out their stock so we had to leave the store empty handed (gift card equal to the amount of the display for future purchase).
So what to do now? The manager and staff were very friendly and helpful and told me I could call in next week to see if they replenished their stock yet. Once replenished, the manager will check the monitor I am going to purchase prior to me stopping by the store so I don't waste another trip. I have a feeling this issue will be ongoing until it is addressed by Apple but we shall see. I really want this monitor for my new MacBook Pro so hopefully this will get sorted soon.
Anyone else have this problem? Anyone purchase a good display?

I'm glad there are others out there who are also seeing this stuff. My local apple store manager was more concerned about her stores sales rather than making the swap and getting me a new one. They held one after I was on the phone with them for 45 minutes, and this process required me to call back the next day again to make sure it was put on hold because even though they were closed, she couldnt place it on hold. Then, this monitor had dust behind it, and they were out of stock and were very unhelpful. I contacted apple and they have since been shipping me a new monitor. The first one came two days ago, cluster of 4 stuck green pixels noticeable on a black background, backlight issues, and there was some dust.
I've said it before and will again, Apple you make great great stuff, but the displays are going down in quality. I've had iphones, new MBP's, and now cinema displays with dust under the glass. I dont know if they feel that most people don't catch this, and this is worth the price of doing busisness, however, its a shame to waste my time in hopes of getting one eventually that is perfect.
Everyone who I talk to at aplcare is very nice and helpful. It just seems a huge waste of money for them to keep shipping monitors out with this issue when they are ultimately spending more to let me win the lottery so to speak in getting a display that doesnt have issues.
Hopefully apple will see these posts and escalate them. Because I am bout to drop another 6,000 on a 2nd macbook pro and the new imacs when they release, and I pray that I dont have these issues. I would love to know who the vendor is, because they have been very sloppy lately.
Maybe I could get a job at apple working quality assurance? That would be a dream job, playing with all thier new product and doing something useful, and getting paid.......

Image persistence on New 24" LED Cinema Display - Quick Reply needed please

Hi
I have a new 24" LED Cinema display - delivered 14 days ago today (hence needing a quick reply!).
Yesterday I noticed image persistence down the entire left hand-side of the screen - should this happen on such a new display?
Should I return it / take it back?
Thanks for any advice.
For what it is worth the image persistence is the left-hand column of the iTunes window - I can read the entire column from the top where it says "Music" down to the "Selected item" that appears above the album artwork window.
I do use iTunes a lot but certainly nothing out of the ordinary and often in reduced size mode or behind other windows. (i.e it does not sit in the same place all the time).
Since I took the screen out of the box the screen-saver has been set to turn on after 15 mins and the Energy Saver is set to turn the screen off after 20 mins (i.e I have taken screen saving measures).
Finally, I have done the "display an all-white image on the entire display" as per here http://support.apple.com/kb/HT2807) and after six hours of this the problem has improved, but certainly not gone away.
So, to return, or not to return, that is the question.
Many thanks.
Rob
PS - I bought this online at Apple Store - if I do return it, could I do this in person at physical Apple Store, or do I have to do it online?

I've had this same problem on my 24" iMac for some time (it's still under my AppleCare warranty, but it began doing this long ago). I searched these forums a year ago and never found anything about this, so I'm glad I found these posts here today.
I guess it's time to haul mine back into the store. Also I note that my screen has developed some dark areas, as if the fluorescent backlight has become irregular.

Disappointed in Cinema Display...

Perhaps it's just the way of flat screen monitors, but I just bought a 20" cinema display and I have to say it's pretty disappointing. Graphics look pretty good but text looks like somebody smudged it with their thumb. Even the Apple logo that comes on when you boot up looks really low res, especially compared to my old VGA monitor. Plus -- you'll probably think I'm crazy -- but the whites are so bright it hurts the eye after a while to look at it, like staring at a light bulb. I wish there was some way to tone down the brightness. Anyway I went to Best Buy and looked at other displays and none looked all that sharp, so I guess that's the way of the world these days.
Am I the only one who thinks these flat panels are overrated?
Scott
G4 Mac OS X (10.4.9)

The smudged looking text may be because of the anti-aliasing or font smoothing. LCDs are generally so sharp compared to a CRT you can see the individual pixels that make up each character. This can also lead to a jagged appearance for characters containing diagonal lines, for example, an upper case 'A'. Anti aliasing or font smoothing attempts to correct this but can result in soft or fuzzy looking text. You can adjust the amount of smoothing applied or switch it off entirely for smaller font sizes using the Appearance(?) system preference. There should be an option 'Medium - best for flat panels'.
The Apple logo is low res, but perhaps deliberately so, as it has to cater for the lowest resolution screens. I think the resolution in general switches during the blue screen when the OS starts loading. You also need to run the display at it's native resolution (and hence need a graphics card capable of supporting it).
As for the brightness, the default setting is too high for me as well but it should be easily adjustable via the relevant system preference. Lowering it may also increase the longitivity of the back light.

Sweating in front of Cinema display

I went into an Apple store a couple of weeks back, and did some email and web surfing there, using a new MacPro with a large Apple Cinema Display attached.
After a while, I noticed that I was sweating, and absent-mindedly thought that Apple should turn up the air-conditioning in the store.
But when I turned away... Relief! I turned back, and realised that the cinema display was projecting quite a bit of heat!!!
I then checked other LCD displays, and found them to produce quite a bit of projected heat as well, although the large cinema display was much hotter than the smaller ones.
Is this normal?
Is there a way to avoid/remove the heat from these screens?
Thanks

Yes, this has come up before. See this thread:
http://discussions.apple.com/thread.jspa?messageID=2672122&#2672122
The way to reduce the heat is to reduce the backlight level. It's directly proportional. Usually, in the Apple Stores, the backlight is all the way up because the stores are brightly lit. At home, you can usually run at a much lower backlight level. It will have the added benefit of being more restful for your eyes. Many people run their LCDs way too bright and never realize why they have dry eye and/or eyestrain.

23" CFL Apple Cinema Display or 24" LED Cinema Display?

The 24" has some great advantages: LED backlighting (no dimming over time!), speakers, power for a MacBook Pro, a built-in iSight camera.
The big advantage of the 23" display: the matte display. The big disadvantage: it's a significant source of heat, noticeable in the Austin, TX summers.
I'm not a graphics professional, but I worry about the reflections on the 24" Cinema Display. To make matters worse, I have a window directly behind me and my office isn't really reconfigurable.
Am I really better off with the 23" Cinema display?

Unless you really need only the features of one of them. *get both* so you have the right tool for the job. When you need the other's advantage, the changeover is simple.
Of course, if you only need one feature set, buy that one.
If you are concerned about dimming over time, you can buy another 23 if it becomes necessary.
My five-year-old 20 inch LCD is still doing fine and it runs every day (although I have set it to sleep it when it is not used for longer than 3 minutes.) It has dimmed a bit, but certainly not to the point that I ever need to run its brightness anywhere near maximum.
Moreover, in another five years, you may have moved on to the boss's office and the worries will be different!
G5 DP 1.8GHz w/Mac OS X (10.5.7) PowerBook 1.67GHz (10.4.11) iBookSE 366MHz (10.3.9) External iSight

30" Cinema Display vs 24" LED CInema Display

I am on the fence about a 30" Cinema Display vs. a 24" LED Cinema Display. My concern is the technology of the 30" display. Are there any concerns I should have about its technology being outdated? How about the CCFL bulbs and their lifetime vs. that of the LED? I know I can get them refurbed for $1299 but price is not the issue. I want to invest money into something that is going to last a while.
Any owners out there with 30" displays that have had them for a while with no issues?
Message was edited by: Michael710

I just took delivery of the 30" and to this point I am disappointed. In my opinion, my wife's 24" iMac display is much clearer and much more vibrant. I have the older plastic 20" that is much easier to view with it's mat finish than the 30" mat finish. The 30" has some sort of subtle sparkle to it and the 20" is perfectly flat looking. I can't explain the look on the 30" but it is very disturbing to me. It's almost like the glisten on a screen when you wipe a damp rag across it.

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?

Backlight bulbs in Cinema Displays

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