HT2811 So, my cinema display is sending short long short...

Okay, so my cinema display is sending short long short. That means I have a pwer supply probem, apparently.  But I have two screens and so can swap over the power supplies; the one giving the error message continues to err, so the fault is not with the power supply but with the screen itself, right?
The screens having been working perfectly for years (five?). All I did was carry them between buildings. A static charge is a possible occurrence here in a dry part of China. The screen has working ports - the keyboard I am using is driven by the faulty screen (the screen procaliming a fault, really).
What am I missing? I'm out of ideas - and, being China, help is a long way off.

You uhave to buy a 150 Watt power supply to make it work again. its a well known problem.

Similar Messages

  • Apple Cinema Display 23" - Blank Screen, "short-long-short" LED code

    Hello everyone.
    This sounds like something of an epidemic... My Apple Cinema 23" HD Display (bought Dec. 2007) hasn't been turning on after a power outage hit our area last week.
    The Computer and Display were OFF when the outage occurred. Everything was plugged into a surge suppressor. Everything ELSE plugged in to the suppressor is fine (including my Mac CPU)... but not the monitor.
    It’s not dead-dead…. It’s a blank screen but there IS a morse-code flash on the LED (short-long-short). According to Apple Support’s LED Translation, it SHOULD be something to do with the power adaptor. The adaptor IS correct… a 90 watt… but just in case I bought ANOTHER 90w adaptor brick. I plugged the monitor to the new brick. THE RESULT WAS THE SAME.
    I’ve tried power cycling, I’ve tried plugging it into different outlets, I’ve tried connecting to other computers. The same LED result remains.
    And, yes, of course, I’ve got no Apple Support, and from what I read in similar posts, outside-the-warranty repairs could hit around $400. I REFUSE!
    For now I have a Samsung monitor from Costco. It’s not bad, but it’s not the Apple monitor with its awesome color-fidelity.
    I've read some other posts with the same problem (LED blink code and all) elsewhere but haven't got a solid answer.
    I wonder… has anyone else incurring this same problem (with the same LED flashing deal) tried to use a 150-WATT adaptor brick? I would try this myself, but I’m currently financially unable (and personally unwilling) to throw more cash at this problem unless I know it’ll fix it.

    Hi all!
    As mentioned on the title of this topic *I HAD THE EXACT SAME PROBLEM* with my 23" Cinema Display...
    Before the failure, the monitor *WAS IN PERFECT CONDITION* (trust me when I comment this, my whole life is in front of a monitor)
    *THE PROBLEM SHOWED UP THE DAY I MOVED THE MONITOR TO AN OTHER OFFICE* (???). Please note that *I TOOK EXTRA CARE WHEN I MOVED THE MONITOR*, besides, when something costs around 1K you owe to.
    *I TRIED AN 150W ADAPTER ON IT AND WORKED FINE!!!* Just like before.
    But since *IT WAS UNDER GUARANTY* I sent it to the local distributor who eventually *REPLACED IT WITH A "NEW" ONE*, which after remarks from my side it turned out it wasn't "new" but re-manufactured by Apple (off course, he guarantied me the parts in it, where brand new and had 0 hours of usage).
    In my question to the technical representative of Apple *"WHAT WAS WRONG WITH MY MONITOR"*, he answered me that *THE INVERTER WAS FAULT*.
    After that I questioned him *"WHY MY MONITOR MANAGED TO WORK WITH THE 150W ADAPTER?"*, he answered me that *THE EXTRA CHARGE OF THE 150W ADAPTER WAS ABLE TO "EXCITE" SUCCESSFULLY THE FAULTY INVERTER IN ORDER TO WORK* and that *IT WAS A MATTER OF MONTHS FOR THE MONITOR TO FAIL AGAIN*.
    That's my story... I hope it may help some of you... Personally I can't have an opinion on the matter, since I'm not a technician. The only thing on which I can comment is that *A 1K MONITOR SHOULD BE WAY MORE DURABLE AND TOLERANT WHEN YOU TRANSFER IT AROUND (if that cause the problem of course)*

  • HT2811 If the display flashed short long short could the power supply be bad?

    If the display flashed short long short could the power supply be bad?

    Hello,
    In order to determine what might be going on, I am going to need a little more information about your setup such as:
    -what version of the cFP drivers are you using?
    -where/what device are you outputting voltage to? at what voltage? how much current do those devices require?
    -could you explain further by what is meant by '[at] approximately 30 seconds, all channels on that PWM shut off'. Are the lights on the modules still illuminated when the system 'shuts off' or do they remain on?
    -Do you have another power supply you could try this with?
    -Does the power supply meet the specifications for use with this module per p. 4 and 5 of the FIELDPOINT AND SPECIFICATIONS™ OPERATING INSTRUCTIONS FP-PWM-520 and cFP-PWM-520  Eight-Channel, 5 V...
    -Does the power supply continue to output 24VDC even after the 'shut down'?
    Regards,
    National Instruments
    Applications Engineer

  • HT2811 Cinema Displays 27", blank screen and doesn't come on.

    I have two Cinema Displays 27" on a Mac Pro, one display powers up and works fine, the other stays blank with the light blinking three times. Short, Long, Short, meaning my power adaptor is wrong, but switching adaptors doesn't work.
    I have read the Apple article about the monitor things it's using the wrong adaptor. But mine I've been using is the correct one for the size and it even works when I switch adaptors and leads with my working display.
    Not sure how to fix this. I've tried unplugging everything, and plugging one thing in at a time and restarting to try and isolate any problems.
    Any suggestions?

    Hi Rocky Rakoon,
    Thank you for your post, and welcome to the Apple Support Communities.
    I understand that your Apple Cinema Display is not turning on upon startup. I'd like to reset the following, as it may resolve your issue:
    Intel-based Macs: Resetting the System Management Controller (SMC)
    http://support.apple.com/kb/HT3964
    You may also want to reset your computer's PRAM:
    OS X Mountain Lion: Reset your computer’s PRAM
    http://support.apple.com/kb/PH11243
    Note: Resetting PRAM may change some system settings and preferences. Use System Preferences to restore your settings.
    For more troubleshooting directly related to the Cinema Display, see this resource:
    Apple Cinema Display: Troubleshooting steps
    http://support.apple.com/kb/HT2810
    Thanks,
    Matt M.

  • Which type of logic board is compatible with my 23" Cinema Display?

    I have a 23" Cinema Display M9178LL/A - A1082 with a faulty logic board and I have noticed that there seem to be multiple types or models of logic boards for this display. How can I determine which boards are compatible with my display?

    Hi there...
    Could you please describe the symptoms that makes you think it is the logic board?
    I have 2 of the same display as yours - I have one 23" that does not power up at all and I am trying to figure out how to get it fix, and the other has the light blinking issue (short-long-short-pause) that I got it to work with a paper strip in the middle pin of the power connector.
    Thank you,
    John

  • Apple cinema display 23" power problem.

    Hey everyone I have a apple 23" cinema display 2006 or 1007 I'm not sure, that doesn't want to power up.
    Heres the deal.. Apple says that in order to use the 23" cinema display you have to have a 90W or 150W power brick, I have the 90W power brick. I plug in the all the wires (power, usb, DVI, firewire) and then the monitor blinks: short, long, short, which according to apple means that the display isn't getting enough power. I did confirm that the power brick works I tried it on my other 20" cinema display and it works prefect.
    Anyone know whats going on?
    Thanks!

    Check this discussion chain:
    http://discussions.apple.com/thread.jspa?threadID=2086442&start=150&tstart=0

  • Dead 23" cinema display?

    I have an issue with a 23" cinema display. The display does not power on. The LED gives a 3 blink sequence of short, long, short, which I believe indicates an improper power supply. I have tried 2 different known-good power supplies with the same result. Anyone know if this issue is resolvable?

    Any update with this? I am having same issue with my Cinema Display!

  • 20'' Aluminum Cinema Display Question

    Hello... I have the short long short blinking, i'm running a 65watt power adapter with my 20'' aluminum screen.  It was just working a month ago, any idea what happened?

    If it's your only display, you don't need any adapter. The Mac Pro graphics card has a DVI port.

  • Multiple 30" Cinema Displays, cable length too short

    I have two 23" Cinema Displays, and they work great! Power adapters have long clean leads and can put them away from my G5 and place the displays where I want. Then I bought a 30" Cinema Display to try in prep for a "Nehalem" machine. I discovered that the power adapter has to be 6 inches away from the back of the computer and the monitor cable is SHORT. I want to use two 30" displays, but the cables are too SHORT and I don't want those two white bricks (power adapters) behind a new Nehalem. Apple says you can run up to eight 30" displays, with the necessary video cards, but no mention how to reach the second display let alone the 8th display!! Does Apple have cables in a male-female configuration? I have looked at Gefen.com and their extensions are Male-Male for the Apple Combo Extension Cables for dual link (30"). I could say demeaning things right now, but I won't.

    Thank you for the quick reply, I can place the power adapter where I want with your solution. You would have posted if you knew about an extension with an "elegant breakout for connection to DVI, USB and FireWire ports" but I will still ask if you know of that kind also so that all monitors have USB and FireWire.

  • Apple Cinema Display 23" - "Short-short-long" LED code

    Hi,
    does anyone know what does it mean when the white led blinks "short-short-long" on an Apple Cinema Dispaly 23 inch?
    Is it dangerous?
    Someone says that it is the power supply.

    <http://support.apple.com/kb/ht2811>

  • Apple Support for purchase of AppleCare for Mac Mini / Cinema Display Combo

    Below is an email that I recently submitted to Apple for feed back on the support system. I am writing here to find out if anyone might have any ideas about how to address this issue without resorting to a 2 hour wait on the phone (my last experience with Apple support). I have redacted some info with ID's and Case numbers as I know Apple does not actively monitor these forums so it would not make sense for them to be posted.
    Here is the question:
    How do others in the Apple community feel about the points that I make in this email? I am curious to know if I am off base in my expectations or if what I am requesting is reasonable?
    Here is the email:
    As someone who has spent 15 years as a web professional and has purchased/approved for purchase more than $1 Million dollars in Apple products, I have to say my recent experience with Apple customer service has been incredibly lackluster and almost insulting. Here is the issue that I am trying to resolve (not why I have written this email):
    I recently purchased a mac mini and cinema display and in addition purchased apple care for both. I only received confirmation of apple care for the mac mini. Hence I have an issue.
    Fail #1) I was asked when trying to register the apple care I purchased at MacAuthority, that I need to upload a receipt. I uploaded said receipt and then waited. Some time later I recieved an email (Jan 21) with with the following information - Case ID: XXXXXXXXXX / AppleCare Registration Number: XXXXXXXXXXXXX / Product Case ID: XXXXXXXXXXX saying my information had been received. I then responded to the email (Jan 21) saying that I did not see an option during the registration for registering both the monitor and the mini. I figured this was based on the registration number and maybe just did not show in the front end. I then waited 7 days to send another email (Jan 28). No response.
    I typically spend my evenings taking care of things like this, as I can almost always address them through a couple of emails and it is done. I don't have time to sit on hold during the day waiting for a live person. Especially when I am doing work that ensures I can buy the product of the company I am waiting on hold with. Instead I try to rely on the most efficient method, which most companies have realized is email communication, when it is implemented properly.
    Fail #2) Rather than making a call to Apple Support on my dime (during the day), I instead head over the support site thinking that at a minimum I would find a contact support form or an auto ticking email address. Heck maybe I would even be able to look up the case ID. To my surprise, there was no contact form, there was no support email address.
    Fail #3) I then started hunting for the next logical step. I saw the link to the Express support and thought - "ah cool, they have a routing system to get my need to the right person/department". Errrrrr - wrong. Although that is what it appeared to be, in the end I was presented with only one option. Call back later. Seriously. SERIOUSLY
    Fail #4) Now, after having spent more than 2 hours of my time trying to get this issue resolved, I am still going to forced to talk to someone on the phone. This is so incredibly insane for a modern web business who supposedly is fanatical about their customers!
    I surely hope that this changes or my last purchase will be MY LAST PURCHASE. I have had so many experiences in the last 3 years that made me feel like I was inconveniencing "Apple". I am about to give up on the brand. There is a "greedy" feeling that I get when dealing with Apple rather than on of "wonderment"
    There are lots of other options that I know provide a better customer experience. Why would I choose Apple over them? I dropped the iPhone for this reason and went to Android after having multiple issues with a support need that later ended up being a known hardware issue with the iPhone 3G.
    I currently own two mac mini's, 1 cinema display, a 17" loaded MBP, a 15" loaded MBP, two airport extremes, an airport express and an iPad. I have spent over $11K with Apple personally in the last 2 years and I cannot get an option to contact someone by email or file a trouble ticket?
    I truly hope someone has taken the time to fully read this email, as I cannot imagine that this is the message that Apple wants to send to its customers. If you have read this and can be so kind as to respond, I will gladly give you some other insights about how Apple can better serve its customers. If you can help me with my support issue, even better.
    Jamie

    Fail #1) I was asked when trying to register the apple care I purchased at MacAuthority, that I need to upload a receipt. I uploaded said receipt and then waited. Some time later I recieved an email (Jan 21) with with the following information - Case ID: XXXXXXXXXX / AppleCare Registration Number: XXXXXXXXXXXXX / Product Case ID: XXXXXXXXXXX saying my information had been received. I then responded to the email (Jan 21) saying that I did not see an option during the registration for registering both the monitor and the mini. I figured this was based on the registration number and maybe just did not show in the front end. I then waited 7 days to send another email (Jan 28). No response.
    It's not clear to me on what information you were expecting from them. Did you, however, check the status of the coverage here to see if perhaps the coverage was registered correctly?
    https://selfsolve.apple.com/agreementWarrantyDynamic.do
    Fail #2) Rather than making a call to Apple Support on my dime (during the day), I instead head over the support site thinking that at a minimum I would find a contact support form or an auto ticking email address. Heck maybe I would even be able to look up the case ID. To my surprise, there was no contact form, there was no support email address.
    Apple does not provide support via email (except for the iTunes Store) and never has. Whether or not you wish to consider this a "fail" is your call, but they have always provided support only via the phone except for a short experiment with live chat which I believe they've abandoned.
    Fail #3) I then started hunting for the next logical step. I saw the link to the Express support and thought - "ah cool, they have a routing system to get my need to the right person/department". Errrrrr - wrong. Although that is what it appeared to be, in the end I was presented with only one option. Call back later. Seriously. SERIOUSLY
    Seriously. Though I think you misread. The option is available for you to set up a time when they can call _you. Or you can just elect to call later. It's your choice which you select.
    Fail #4) Now, after having spent more than 2 hours of my time trying to get this issue resolved, I am still going to forced to talk to someone on the phone. This is so incredibly insane for a modern web business who supposedly is fanatical about their customers!
    See number 1.
    I surely hope that this changes or my last purchase will be MY LAST PURCHASE.
    Suit yourself. I very much doubt that Apple will change their policy, since it's been the same for many years. There's nothing anyone here can suggest to change things or address them differently. You'll have to talk with them on the phone if the registration didn't go through as expected. Again, you can set up a time when they will call you so as to avoid waiting on hold.
    Regards.

  • 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.

  • Will a wet dropped 20 inch Cinema display work?

    I have a Cube and 2 ower Mac G3s I had been eyeing a display for ages at a local junk store Hard Off in Japan 'Do not laugh ! in the past years since the Earthquake the Jaanese around Sendai have been throwing out broken things caused by the 2011 Eartquake I have picked u some rubbish and good stuff I like to take apart Macs and try to fix or mod them.
    Today I came across 2 Aple Keyboards a Blue tooth Mouse and OBS 20inch Cinema display ! wow ! it had been raining hard for 3 days they were dumped at the Tohoku University QawaOochi Campus ,famous for Fibre Optics and now Gigabyte internet spead research They are famous for getting top funding so they renew Computers often and just dump the unwanted they can not sell or give them away !
    I took it to work and I was on my bike ,when I got off  it droped on the ground and the plastic corner cracked but I was more worried about the water inside.
    I dismantled it and found water inside the clear plastic case and the case that looks Aliminium but it is lastic the screws are tough to unwind and was well closed
    sorry image to large so can not insert. It is possible water seaped into the front of monitor ot not the back.
    I may have broken cracked some inner circit board by dropping the water can dry as long as I give time in a warm dry place before replacing the back lastic but I dare not venture further because of foil and complex metal casing inside,there is a mesh cover and inside a mother board I am thinking when the weather hanges to put it outside in the sunshine and the air in autumn is very dry here on clear days I need to warm it and a breeze at the same time.
    These things were 3,999 USD when new and now are just 100 USD on  eBay if it does not work I will take apart and sell the parts.
    I left the 2 Keyboards alone , once water gets in they are difficult to dry and will short.

    <http://support.apple.com/kb/ht3131>

  • Apple, Please Fix Your Cinema Display Adapters Already

    I know this is not a new issue since there are already topics identical to my problem.  I bought my Cinema Display in 2007, since then I have had to buy 3-4 power adapters.  When they fail the screen goes black, then you unplug it and it works for a short time but as you keep using it the time they work keeps decreasing.  My question here is why, Apple, have you not fixed this problem which  I have had for the last 5 years?  The other issue besides money spent is my computer is basically worthless until Apple sends me the new part.  I either have to have a backup power supply for the Cinema Display or have a different brand monitor as a backup.  Apple, please fix this problem, I like the display, fix the adapter.

    Brian,
    I had this same issue and finally found a prefPane called SwitchResX that addresses the issue that I wish Apple had. It is designed to many other things but I only use it to deactivate a second display and it seems to work well for that.

  • Macbook Pro dark screen after disconnecting from Cinema Display

    Dear all,
    the issue I am having:
    - after disconnecting from Cinema display (having first put my Macbook Pro in "sleep" mode) I just ca't make the Macbook pro scren show anything....black display
    - but is it really asleep? NO!!! It just STILL believes it's connected to the Cinema Display
    That's what I though was happening, so I thought: "if I now plug in the thunderbolt-to-VGA dongle that I use for the videoprojector then the screen might come back... and.... Voilá! It comes back, BUT starts flickering until in the end it just dissappears....
    I can reproduce the error all the time. Worse than that: a reboot does not help at all.
    Looks like there is an internal hardware switch that must be left "engaged" and then the Mac just believes it is connected to an External screen and sends the signal though the thuderbolt port instead of through the screen!!!
    WEIRD error/bug or whatever!!
    I have no idea how to make this reach the Apple guys.... I tried to report a Bug but they asked me to join in as Apple developer which I just can't do (for working issues).
    Can anyone tell me if they have had this problem, and whether Apple is taking care of it?
    (this reminds me of an issue with an internal switch with the headphones in my old MacBook Pro.... after disconnecting the headphones, the internal switch was not being disengaged, so sound would NEVER come out as it was being sent to the headphones instead of to the speakers... Same problem here but with the Image??? :-((( )
    Thanks a lot.
    BTW: here go my Mac characteristics:
    Mac OSX 10.8.2
      Model Name:          MacBook Pro
      Model Identifier:          MacBookPro10,1
      Processor Name:          Intel Core i7
      Processor Speed:          2.6 GHz
      Number of Processors:          1
      Total Number of Cores:          4
      L2 Cache (per Core):          256 KB
      L3 Cache:          6 MB
      Memory:          8 GB
      Boot ROM Version:          MBP101.00EE.B02
      SMC Version (system):          2.3f32
    Intel HD Graphics 4000:
      Chipset Model:          Intel HD Graphics 4000
      Type:          GPU
      Bus:          Built-In
      VRAM (Total):          512 MB
      Vendor:          Intel (0x8086)
      Device ID:          0x0166
      Revision ID:          0x0009
      gMux Version:          3.2.19 [3.2.8]
    MacBook Pro:
      Vendor Name:          Apple, Inc.
      Device Name:          Macintosh
      UID:          0x0001000D11C0EF80
      Firmware Version:          11.1
      Port:
      Status:          Connected
      Link Status:          2
      Link Controller Firmware Version:          0.11.4
      Port:
      Status:          No devices connected
      Link Status:          7
      Link Controller Firmware Version:          0.11.4

    Sometimes I experience the same after disconnecting my 24" display (in seldom cases, the mouse cursor is not painted correctly, as well).
    Can you check - when it happens - if in System Profiler > Hardware > Graphic > Quartz Extreme is listed as 'supported'. I found it to be 'not supported' when the scrolling and display behaves strangly. Also the Menu Bar is not transparent any more.
    Next to rebooting, logout and login again fixed the issue for me. But I am also looking for a better fix/explanation.
    marcus

Maybe you are looking for