imac 27 late 2009 lcd panel free sample

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Many Apple products use liquid crystal displays (LCD). LCD technology uses rows and columns of addressable points (pixels) that render text and images on the screen. Each pixel has three separate subpixels—red, green and blue—that allow an image to render in full color. Each subpixel has a corresponding transistor responsible for turning that subpixel on and off.

Depending on the display size, there can be thousands or millions of subpixels on the LCD panel. For example, the LCD panel used in the iMac (Retina 5K, 27-inch, 2019) has a display resolution of 5120 x 2880, which means there are over 14.7 million pixels. Each pixel is made up of a red, a green, and a blue subpixel, resulting in over 44 million individual picture elements on the 27-inch display. Occasionally, a transistor may not work perfectly, which results in the affected subpixel remaining off (dark) or on (bright). With the millions of subpixels on a display, it is possible to have a low number of such transistors on an LCD. In some cases a small piece of dust or other foreign material may appear to be a pixel anomaly. Apple strives to use the highest quality LCD panels in its products, however pixel anomalies can occur in a small percentage of panels.

In many cases pixel anomalies are caused by a piece of foreign material that is trapped somewhere in the display or on the front surface of the glass panel. Foreign material is typically irregular in shape and is usually most noticeable when viewed against a white background. Foreign material that is on the front surface of the glass panel can be easily removed using a lint free cloth. Foreign material that is trapped within the screen must be removed by an Apple Authorized Service Provider or Apple Retail Store.

Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI (adapters sold separately). 27-inch models also support input from external DisplayPort sources (adapters sold separately).

EEE code: 8P0,DTA, Apple part number: 661-5312, Compatible models: A1312-Late 2009-MB952LL, A1312-Late 2009-MB953LL, A1312-Late 2009-MB953LLCTO,, Compatible Mac info. : 27-inch 3.06GHz iMac , 27-inch 2.66GHz i5 iMac , 27-inch 2.8GHz i7 iMac, 661-5312 Panel, LCD Display, 27 inch - 27 inch Core2Duo - Intel i5 - i7 A1312 iMac Late 2009

Ever since it was released in August 1998, the iMac becomes one of the most popular desktop computers worldwide, and it evolved into many different forms. In 2009, a new version of the iMac is introduced to users, and it"s the first device with Target Display Mode. This new feature enables people to use the iMac as a monitor to display another device.

"Can I use my iMac as a monitor for PC?" Many people are curious about this question. Yes, you can use the iMac as a monitor for a PC as long as the iMac offers a target display mode and the Thunderbolt port or the Mini DisplayPort. Then, you can follow the steps in this post to connect and use an old iMac as a monitor.

2. Plug the end of a cable into the Thunderbolt port or the Mini DisplayPort of the iMac, and then plug the other end of the cable into the Thunderbolt or Display port on your PC.(Don"t use the adapter)

7.Don"t forget to adjust the screen resolution for optimal display quality. To match the relatively old iMac models, it"s advisable to select the 2560 x 1440 resolution on your PC.

To use an iMac as the monitor for a PC, the first step is to check if the system and version of your device are available. As to the operating system, the iMac should use macOS High Sierra or an earlier version. Besides, the iMac you want to use as the monitor should have a bi-directional Mini DisplayPort or a Thunderbolt port that enables your iMac to get the data input and work as a monitor for another device. There are mainly several types of iMac you can choose from.

Other iMacs also have the ports mentioned above. For instance, the 5K retina iMac that was released in 2014 has the Thunderbolt port. But it cannot work as a monitor for PC as it doesn"t support the Target Display Mode.

If it"s unnecessary to use the adapter, you only need to plug the end of a cable into the Thunderbolt port or the Mini DisplayPort of the iMac, and then plug the other end of the cable into the Thunderbolt or Display port on your PC.

After all the devices are correctly connected, the next step is to activate the Target Display Mode on iMac and mirror the PC screen to iMac. This part will give you the best straightforward method of using iMac as monitor for PC. Follow it if it"s useful for you.

Step 4.Don"t forget to adjust the screen resolution for optimal display quality. To match the relatively old iMac models, it"s advisable to select the 2560 x 1440 resolution on your PC.

What if you want to watch what is happening on the PC screen with your iMac, but the iMac you are using is unsuitable for the method above. There is an alternative way to do that, i.e., record the PC screen as a video and play the captured video on your iMac. To record a high-quality video, a powerful screen recorder that is compatible with your PC, like EaseUS RecExperts, is what you need.

This software supports recording screen with your audio and webcam simultaneously, and this feature enables you to record many types of video. Besides that, you can adjust the output format in accordance with the formats the video player supports. This is really helpful if you want to play the recorded video on iMac without converting the format.

"Can you use an iMac as a monitor?" This may be a problem that has troubled you for a long time. Luckily, this post solved it by offering you a detailed tutorial on how to use iMac as monitor for PC. You should pay attention to the model and system of the iMac, the way those devices get connected, and the method of activating the Target Display Mode.

What if your iMac doesn"t have a Mini DisplayPort/Thunderbolt port and doesn"t support the Target Display Mode? It"s optional to capture the PC screen as a video and play it on your iMac. EaseUS RecExperts is the most helpful tool that enables you to record high-quality videos with simple steps. Don"t miss it.

The Apple Cinema Display is a line of flat-panel computer monitors developed and sold by Apple Inc. between 1999 and 2011. It was initially sold alongside the older line of Studio Displays, but eventually replaced them. Apple offered 20, 22, 23, 24, 27 and 30-inch sizes, with the last model being a 27-inch size with LED backlighting.

There have been three designs for the Cinema Display, one featuring polycarbonate plastic and two featuring anodized aluminum. The first displays were designed to match the colorful plastic of the Power Mac G3 and later the Power Mac G4, while the second revisions were designed to match the aluminum aesthetics of the Power Mac G5 and PowerBook G4. The last available design matched the unibody laptops released in October 2008.

On October 14, 2008, the 20-inch Cinema Display and the 23-inch Cinema HD Display were replaced with a 24-inch model made with aluminum and glass, reflecting the appearances of the latest iMac, MacBook Pro and unibody MacBook designs. The display features a built-in iSight camera, microphone and dual speaker system. A MagSafe cable runs from the back of the display for charging notebooks. It is the first Cinema Display to use LED backlighting and Mini DisplayPort for video input; however, the LED backlighting is edge-lit as opposed to the fully back-lit CCFL of the previous models, resulting in a lower brightness cd/m2 output. This display is only officially compatible with Macs that have the Mini DisplayPort connector. A third-party converter must be used in order to use this display with older Macs. Furthermore, many newer Apple users with newer MacBooks that solely have USB-C ports have been continuously perplexed by the fact that their Apple-branded Thunderbolt 3 (USB-C) to Thunderbolt 2 adapters do not transmit a signal to their LED Cinema displays. Many users have mistakenly presumed their new MacBooks were incompatible with their older displays, when in fact an ordinary generic USB-C to Mini DisplayPort adapter will successfully transmit the same signal; This is due to a small internal difference in the newer Thunderbolt 2 and the older Mini DisplayPort standards.

With the introduction of LED panels, the matte, anti-glare screen panels were retired, except for the 30" Cinema Display. Apple had already moved away from matte screens in its line of iMac desktop computers on August 7, 2007. Apple had not offered any equipment with a matte, anti-glare screen after the 15" non-Retina MacBook Pro was discontinued in October 2013 until the introduction of the Pro Display XDR in 2019. This had been a cause for concern among users who wanted matte screens for their area of work, particularly graphic designers, photographers and users who extensively view their screens.ease-of-use.

On July 26, 2010, the 24-inch LED Cinema Display and the 30-inch Cinema HD Display were replaced by a 27-inch model that supports up to 2560×1440 resolution. This model was sold for $999 USD.

On August 7, 2006 the Aluminium Cinema displays had a silent upgrade that boosted the brightness and contrast ratios to 300/400 cd/m2 and 700:1. The last Cinema displays are still desirable to professionals being the last anti-glare displays made by Apple (until the Pro Display XDR) and having a true IPS 8-bit (no dithering) fully back-lit panel and slightly higher brightness than that of the newer Apple Thunderbolt displays, which have a reflective glossy screen and an edge-lit panel. These displays (including the LED Cinema 24”) are the last Apple desktop monitors made in 16:10 aspect ratio that is also used on MacBook Pros and provides more vertical work space.

Two ways to use an older iMac of any screen size and any year model earlier than the 2010 models. Only more modern ones can use Targeted Display Mode between two Mac OS computers (either two Apple machines or an iMac and a PC running Mac OS).

is to strip out all hardware from the old iMac body shell but the LCD panel and get a panel control board, and some cables in a kit and a 12VDC PSU for that conversion. Not expensive but takes care and some electronics talent. Search Google how and where to buy the kit on eBay or other places.

is to use the iMac as is, but with an operating MacOS hard disk running it. You will have to do that step first. Next is put both on same network. Ethernet will perform a bit better than wireless. Not expensive for a couple cables and a switch or hub. Even a peer to peer transfer ethernet cable (not a regular one) will do. Next search the Apple software suppliers for a program to run on both machines. One will be a server (the master that runs your programs, can be PC or iMac in some of these utilities) and the other will be the client (the target that will be the extended display of the other). iMacs, PCs and some Android tablets and phones can be used. Some programs are free, some have a trial period of a few minutes, then you buy, some are a few dollars. Another choice is a remote screen view utility like TeamViewer or other VNC that will let you see the PC on the iMac screen or vice versa. But this is not an extension for double the screen area like the others are.

Using computers since 1962. Running 7 older iMacs, 26 PCs and laptops for many flight simulators as wide extension screens for several decades, building, upgrading and repairing PCs and a few laptops for many years.

Screen weakness: The metal surrounds on the LCDs of these machines often break at the sides near the hinges. This was an unforeseen weakness in the design of the LCD assembly. These days this fault is not worth repairing given the age of the machine.

Screen weakness: The display starts to come away from the hinge area. This was an unforeseen weakness in the design of the LCD assembly where the adhesive fails. This is repairable, but the costs (around £200 + vat) are more expensive than the machine is worth.

"Staingate": Delamination of the LCD panel. Nicknamed "Staingate", this is where the anti reflective coating comes off the LCD. Apple may still replace the screen for you for free. Check with them for details.

"Staingate": Delamination of the LCD panel. Nicknamed "Staingate", this is where the anti reflective coating comes off the LCD. Apple may still replace the screen for you for free. Check with them for details.

Randomly powering off: The CPU has several power states and voltages. Some CPUs have become unstable at the extremely low voltage on one of it"s cores. The CPU will sometimes briefly dip into that power state, and if it happens to be on the core where it is unstable, you will see the "silent" crash. Screen goes black, a few seconds later it dies completely. There is an inexpensive piece of software which may resolve this issue without replacing the logic board. You can buy it from here.

"Staingate": Delamination of the LCD panel. Nicknamed "Staingate", this is where the anti reflective coating comes off the LCD. Apple may still replace the screen for you for free. Check with them for details.

"Staingate": Delamination of the LCD panel. Nicknamed "Staingate", this is where the anti reflective coating comes off the LCD. Apple may still replace the screen for you for free. Check with them for details.

Display issues (Stage lights effect / Flexgate): This exhibits as either bright spots along the bottom of the LCD panel, or complete failure of the LCD backlight. We have a service to repair this fault here.

Using this method you can effectively turn any external display into the main display for any Mac (MacBook, MacBook Pro, Air, iMac, whatever) which is a really nice way to maximize screen real estate in dual-display setups that feature a smaller screened Mac with a larger external monitor hooked up to it. Note this is different than operating a MacBook or MacBook Pro in clamshell mode, which also will set the external display as the primary screen, though clamshell is different in that it disables the builtin screen of a laptop in order to power the external monitor.

You can do this with any external display, whether it’s an official LCD or LED monitor, an HDTV connected to a Mac through HDMI, or even something like a projector or a software-based solution like AirDisplay. If it’s recognized as an external display, it will work.

If you’re thinking of upgrading your Mac but don’t want to get rid of your trusty old iMac, here we show you how to use an iMac as an external display with a Mac.

However, using an iMac as an external monitor with another Mac is nowhere near as easy as it should be in 2023 but there are ways to do it as we’re about to explain.

Firstly, it’s important to be aware from the start that it’s far simpler and results in much better resolution to use a dedicated external display than an iMac as an external monitor with a Mac.

This is especially true when trying to use an iMac as an external display for video editing or graphic design with the Apple Silicon M1/M2 MacBook Pro, M1/M2 MacBook Air, M1/M2 Mac Mini and the Mac Studio.

This is because the latest M1 and M2 chip Macs do not support the old Target Display Mode available in Intel Macs which utilized the full resolution and capabilities of the iMac as a monitor.

Since Apple has dropped Target Display Mode from both the latest iMacs and Apple Silicon Macs, you can use an iMac as a monitor either via AirPlay or using third party apps which don’t perform as well.

We therefore strongly recommend checking out the following guides to the best external monitors for Mac instead trying to use an iMac as a long term external display solution.

Apple Silicon M1 & M2 Macs such as the M1/M2 MacBook Pro, M1/M2 Mac Mini and Mac Studio can use an iMac as a monitor but not using Target Display Mode.

Apple Silicon M1 and M2 Macs cannot use iMacs that support Target Display Mode as an external display because M1 and M2 Macs do not support macOS Catalina which the Primary Mac needs in order to connect to a iMac with Target Display Mode.

All three methods aren’t quite as good as Target Display mode because there is usually some lag when using them and only Luna Display supports 5K resolution on the iMac as it works via Thunderbolt or Ethernet ports (although it’s not free).

Generally we wouldn’t recommend using an iMac as an external display on an M1 or M2 Mac if you’re using it for something like video editing due to lag unless you used Luna Display.

Target Display Mode (Intel Macs Only, Free): This supports the full resolution of an iMac display but only works with 24 or 27-inch 2009 or 2010 iMacs or any iMac from 2011 to mid-2014. It also only works when using an iMac as a monitor with an Intel Mac not the latest Apple Silicon M1 and M2 chip Macs.

Using AirPlay Mode in macOS (Free):This works with both Intel and Apple Silicon Macs that support AirPlay but does not support the maximum resolution of an iMac. It only supports a maximum resolution of 1080p with a 16:9 aspect ratio and can also be very laggy.

Using Luna Display ($119.99): This works on all Macs and supports 5K resolution when using an iMac as an external display with another Mac. However, it’s not free and requires plugging the Luna Display device into a Thunderbolt port on your Mac.

Using Duet Display ($2.09/month): This works on any iMac via the Cloud and supports up to 4K resolution. However, it can be laggy and requires a monthly subscription to use.

If you have an iMac built between 2009 to 2014 with Target Display Mode, you an use it with your Intel Mac Mini, Intel MacBook Air or Intel MacBook Pro as an external monitor.

2009 – 2010 24-inch and 27-inch iMacs: Can be used an external monitor with any Mac that has a Mini DisplayPort or Thunderbolt 1 or Thunderbolt 2 port

This is because the resolution in Retina iMacs was so high, that a Thunderbolt port would not be powerful enough to support it without increasing the bandwidth of Thunderbolt ports to support Retina displays.

Connect it to the Mac you want to use it with either with a Mini DisplayPort cable or Thunderbolt cable. If it has both, then Thunderbolt is preferable as it also allows you to use more than one iMac as a display at once. Most Intel Macs can support at least one or two external Thunderbolt displays and the latest Mac Studio with M1 Max or M1 Ultra chip can support up to 4 Thunderbolt displays.

Your iMac should automatically enter Target Display Mode but if it doesn’t, press CMD+F2 to activate it. You’ll see the desktop or screen of the Mac you’re connected to on the iMac.

If you want to play music on your source Mac and hear the audio come out of the speakers on your iMac, then go to the Apple logo in the top left of your screen, select System Preferences > Sound > Output and select the iMac as your output device.

Your Mac also won’t recognize any other ports on your iMac. If you want to connect an external hard drive for example, you must plug it into your source Mac, not the iMac it is connected to.

Any applications or software that are open on your iMac will also continue to run in the background consuming far more energy than a standard external display and generate a lot more heat.

Apple Silicon M1 and M2 Macs do not support connecting to iMacs with Target Display Mode because the primary Mac needs to be running macOS Catalina which is not supported by Apple Silicon Macs.

All MacBook Pros or MacBook Airs from 2018 onwards, iMac or Mac Pros from 2019 onwards, the ‌iMac‌ Pro, and the 2020 or later Mac Minis support AirPlay.

AirPlay 2 mode is a feature in macOS Monterey and later that allows you to wirelessly share a screen and audio with another Apple device including iMacs running Monterey.

This means that AirPlay can’t utilize the full retina resolution on your iMac and it definitely won’t be able to use the full 5K resolution on 5K iMacs.

Make sure that the iMac is running macOS Monterey or later and the primary Mac you want to connect it to is running macOS 10.8 Mountain Lion (or later) to use the iMac as a main display or macOS 10.9 Mavericks (or later) to use it as a secondary display.

On the iMac, go to the Apple logo in top left corner and go to System Preferences > Sharing and check the box AirPlay Receiver on the iMac. On macOS Ventura this is under System Settings > Sharing.

On the Primary Mac that you’re connecting to your iMac’s display, go to System Preferences > Dock & Menu Bar, select Screen Mirroring and check the box Show In Menu Bar and select Always from the drop down menu.

You can then either use WiFi or a USB-C/Thunderbolt cable to connect your Mac to the iMac. For less lag, we recommend using a Thunderbolt-to-Thunderbolt cable.

On the Primary Mac, go to the Menu Bar at the top of the screen and click on the Screen Mirroring symbol (which looks like two small black bars) and in the drop-down menu that appears, you will see your iMac. You can choose whether to Mirror the display or Use as a Separate Display. We recommend choosing Use as a Separate Display because the image quality is much higher than mirroring.

Finally go to the Screen Mirroring symbol in the Menu Bar again and select Display Preferencesand click on the Arrangement tab. You can then arrange the displays as they are on your desk so that dragging the mouse cursor to the left for example makes it appear on the iMac screen if it’s positioned to the left of your Primary Mac on your desk.

You can deactivate AirPlay and stop using your iMac as an external monitor at any time by going to the Screen Mirroring symbol in the Menu Bar and selecting Turn AirPlay Off.

Luna Display is from the makers of Astropad and is a small dongle that connects to the Thunderbolt port on your Mac including M1 & M2 Macs and allows you to transmit images and audio from any Mac to an iMac.

If you have an M1 or M2 Mac Mini, Luna Display will also connect to an iMac display via Ethernet too or via Ethernet to any M1/M2 Mac using a Thunderbolt to Ethernet adapter.

This does mean that you will need to use two Thunderbolt ports – one for the Luna Display dongle and one to connect your Mac to the iMac – but it’s well worth it.

Like AirPlay though, you can also run Luna Display over a WiFi connection as long as your Mac and iMac are connected to the same WiFi network although the quality and performance are not as good as using a Thunderbolt cable.

Open the Luna Display app on your iMac. Click on Setup and you’ll also have the option o grant Luna permission to use your iMac keyboard with your M1 Mac if you want.

You can also enable Retina resolution which is the real outstanding advantage of Luna Display compared to other ways of using an iMac as external monitor.

Although the big advantage of Luna Display is support for using an iMac as an external monitor at 5K, it can be unstable at times and cause kernel panics which crash the Primary or Source Mac.

When Duet detects the iMac the message will change from  “Connect to Mac or PC” to “Launching Duet” and you should see your Primary Mac screen on the iMac display.

You can customize the quality of the image you see on your iMac with Duet Display by going into the Settings and you can configure it to use the highest possible resolution that your monitor supports including 4K.