iMac Screen and Glass Replacement

Yes, an iMac screen can almost always be replaced, and on 2009–2011 models a cracked front glass can be replaced on its own, from $199. On 2012 and later iMacs the glass is laminated to the LCD, so the whole display is replaced, from $499 on a 21.5-inch and from $1,199 on a 2019–2020 27-inch 5K. Before we quote for a panel we make sure the panel is the problem, because vertical lines, flickering and a black screen can just as easily come from the graphics card, the backlight circuit or a display cable.

Two kinds of iMac display

How the screen is built decides what can be repaired, and it splits the Intel iMacs covered by our iMac repair and upgrades service into two groups.

2009–2011: a separate glass panel

The aluminium iMacs from Late 2009 to 2011 (21.5-inch A1311 and 27-inch A1312) have a sheet of glass in front of the LCD. It is held on magnetically, with steel pins along the top edge, and lifts off with suction cups. Nothing is glued, which allows two repairs later iMacs cannot have:

• Glass only, from $199. If the glass is cracked but the picture behind it is perfect, we replace the glass alone, on the 21.5-inch or the 27-inch.
• Dust behind the glass. Dust and haze build up in the gap between glass and LCD. The same glass job, from $199, includes cleaning both surfaces, which is fiddly work: any speck left behind is plainly visible afterwards.

If the LCD itself is damaged, with lines, dead patches or a cracked panel under the glass, the panel is replaced: from $379 on the 21.5-inch, from $499 on the 27-inch. Our 2009–2011 iMac page covers what else is worth doing while one is open.

Late 2012 onward: glass and LCD are one part

From the Late 2012 slim design through to the 2020 27-inch, the cover glass is bonded to the LCD, and the whole display is fixed to the aluminium case with adhesive strips. A cracked front means a complete display assembly, and every job starts by cutting the adhesive and ends with new strips. iFixit gives the Late 2012 21.5-inch a repairability score of 3/10, and the Retina 4K 21.5-inch just 1/10.

Screen replacement prices

Prices include GST, fitting, testing, new adhesive on 2012 and later models, and our 12-month warranty on parts and labour. The non-Retina 21.5-inch Late 2015 and 2017 are quoted by model, and if your 2020 has the optional nano-texture glass, say so when you ring.

See our pages for the 21.5-inch 2012–2014, 27-inch 2012–2013, 21.5-inch 2015–2019, 27-inch 5K 2014–2017 and 27-inch 5K 2019–2020 for model details. If you are not sure which you have, About This Mac in the Apple menu names it; if the screen is unreadable, enter the serial number from the underside of the stand at checkcoverage.apple.com.

Faults that look like a bad screen but are not

A new 5K panel alone costs about $745 at retail in Australia, an expensive part to buy on a guess. These are the causes outside the panel that we rule out first.

The 2011 27-inch graphics card

The Mid 2011 27-inch with the 3.1GHz Core i5 or 3.4GHz Core i7 has an AMD Radeon HD 6970M graphics card. Apple's replacement program for these (units sold May 2011 to October 2012, covered for three years) listed the symptoms: a distorted picture, a white or blue screen with vertical lines, or no picture at all. The program has long expired. On one of these, suspect the card before the panel: a replacement graphics card from $549 fixes it, and a new display does not. Our logic board, graphics and power supply repair page explains the card options.

Backlight faults: dark screen, faint picture

If the chime or fans tell you the iMac is running but the screen stays dark, hold a torch close to the glass in a dim room. A faint login window or desktop means the LCD is working and only the backlight is off. The cause is either the circuit that powers the backlight, a board-level repair from $449, or the LED strip inside the panel, which does need a new display. We test which before quoting.

Display cables and connectors

A damaged, loose or corroded display cable or connector can cause lines, flicker, odd colours or a blank screen. Clues that point at the cable: the fault changes when the screen is tilted, comes and goes as the iMac warms up, or started after it was moved, knocked or opened for another repair. A cable costs a fraction of a panel.

Vertical lines on 5K models

This one is anecdotal: there is no published failure data, only repair-forum reports. Those suggest solid-colour vertical lines on 5K models are sometimes the panel and sometimes the display flex cable or its connector, and that some cases trace back to damage from an earlier opening. So test a 5K with lines before ordering a panel, and tell us if it has been opened before.

Flicker on the Late 2009 27-inch

Apple addressed flicker on this model with graphics and display firmware updates in December 2009 and February 2010. If one flickers, check it has had all its updates before blaming the panel.

Test the display yourself first

These checks cost nothing and tell us far more than "the screen has lines".

1. Compare a screenshot with a photo. Press Command-Shift-3 to save a screenshot, email it to yourself and open it on your phone. Then photograph the iMac's screen. If the lines appear in the screenshot, the image is corrupted before it leaves the graphics processor, and a new panel will not help. If the screenshot is clean and only the photo shows the fault, suspect the panel, its cable or the backlight.
2. Watch the startup screen. Lines already visible on the Apple logo and progress bar, before macOS loads, mean hardware. A fault that appears only after login could still be software.
3. Start in safe mode. Hold Shift at startup until the login window appears. If the flicker stops in safe mode, look at software first: a display setting, an app or a login item.
4. Try an external monitor on the Mini DisplayPort or Thunderbolt port. A clean picture there while the iMac's own screen misbehaves points at the panel, cable or backlight. The same fault on both points at the graphics or logic board.
5. Note what changes it, such as tilting the screen gently or the iMac warming up. If the screen is black, do the torch test above. Do not press on the display.

Target Display Mode is not worth trying here. It only works on 2009 to mid-2014 iMacs running High Sierra 10.13.6 or earlier, with a second, older Mac and the right cable, and Late 2014 and later iMacs lack it entirely. The checks above answer the same question with less fuss.

When a new screen is worth it, and when it is not

A screen costs what the panel costs, whatever the iMac is worth. The table compares our price with typical private asking prices for working units on Gumtree in September 2026, which are a ceiling rather than a sale price.

Resale is not the only comparison. A new 24-inch M4 iMac is $2,399 with 16GB and 256GB, and a Studio Display is $2,599. Repairing a 2019 or 2020, from $1,199, keeps a 27-inch 5K screen for about half the price of either, and for less than a refurbished unit at about $1,600, but the repair costs more than either model sells for privately. Against that, the 2019 is on its last official macOS (Sequoia), and the 2020 runs Tahoe, which Apple has confirmed is the final macOS for Intel Macs. If the rest of the machine is sound and you would keep it for years, the repair can still make sense; if you were already thinking of replacing it, now is the time. Our guides to repairing or replacing an old iMac and iMac repair costs go further.

A broken display need not be the end of the iMac:

• The computer works, the screen does not. Use an external monitor. A decent used one costs far less than a new panel.
• The screen works, the computer does not. On 27-inch 5K models from 2014 to 2020, a third-party driver board (about $449 in Australia for the board) turns the panel into a standalone 5K monitor, for much less than a Studio Display.
• Neither is worth fixing. Faulty 5K 2017 units still advertise for around $200–$249 as parts machines.

Call 0400 454 859

27-inch screen that will not hold its angle: the hinge

If the screen on your 27-inch tips forward or will not stay where you set it, the hinge spring has failed. Apple acknowledged this on the Late 2012 and Late 2013 27-inch, blaming plastic washers in the spring mechanism: a program covered units shipped from December 2012 to July 2014 for five years from purchase and refunded owners who had paid. It was communicated to service providers rather than published on Apple's website, and it has expired.

Our repair is from $299. The hinge sits deep inside, so the display comes off and the internals are stripped out to reach it, with new adhesive at the end; if an SSD is on your list, do both in the same opening. Hinge fixes are also sold for later 27-inch models, but we have not seen reliable figures on how often those fail. Slide-on brackets that lock the screen at one angle are a cheaper workaround, at the cost of the tilt.

Dust and dark smudges inside the screen

On laminated 2012 and later models there is no gap to reach, so marks inside the screen cannot be cleaned. A 2018 US class action alleged that iMacs from 2013 to 2018 lacked dust filters, causing dark smudges inside the screen; we have not found a confirmed outcome. The fix is a new display, so check the table above first.

Bringing it in

Ring 0400 454 859 first and describe what the screen is doing; the phone quote is free. We take iMacs by drop-off at the workshop near Castle Hill (Monday to Saturday, 8am–6pm), and our Western Sydney iMac repair page covers drive times and carrying one safely. A black screen or intermittent fault may need the $150 bench diagnostic, which is waived if you go ahead with the repair. If the iMac will not start at all, see our iMac won't turn on guide. Panels are ordered for your exact model, so we give you a timeframe with the quote.

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Questions

Can you replace just the glass on an iMac?

On 2009–2011 iMacs, yes. The glass is a separate sheet held on magnetically, so if only the glass is cracked we replace it from $199, including a clean of the dust behind it. On Late 2012 and later iMacs the glass is laminated to the LCD, so there is no glass-only repair. A crack in the front of one of those means a full display assembly, from $499 depending on the model.

How much does an iMac screen replacement cost in Sydney?

Our prices start from $379 for a 21.5-inch 2009–2011 panel and from $1,199 for a 27-inch 5K from 2019 or 2020, including GST, fitting, new adhesive on 2012 and later models and a 12-month warranty. Published prices elsewhere in Australia for 27-inch 5K panels range from roughly $620 to over $1,400, so ours sit toward the upper end, below the $1,250 a Sydney CBD chain charges for a 2014–2017 5K. The panel is most of the cost.

Can vertical lines on an iMac screen go away on their own?

Lines caused by a loose or damaged display cable can come and go, especially as the iMac warms up or when the screen is tilted, and that behaviour is itself a clue that the cable rather than the panel is at fault. Lines from a failing panel or graphics card do not repair themselves and tend to stay. A screenshot compared with a phone photo tells you which part of the chain to suspect.

Can I keep using my iMac with a broken screen?

Usually, yes, as long as the computer itself still works. Connect an external monitor to the Mini DisplayPort or Thunderbolt port and use that as the main display. It is a sensible answer for a 27-inch 2012–2013 or a 5K from 2014 to 2017, where a new panel costs more than the whole iMac would sell for privately.

Can I replace an iMac screen myself?

On 2009–2011 models a careful owner can lift the magnetic glass off with suction cups, although keeping dust out when it goes back on is the hard part. From Late 2012 the display is glued, the adhesive has to be cut and replaced, and iFixit rates some of these models as low as 1 out of 10 for repairability. A slip with the cutting tool can crack the panel, which on a 5K is an expensive mistake.

Will a screen replacement erase my files?

No. Replacing the display does not involve the drive, and your files and settings are exactly as you left them when the iMac comes back. We still suggest a backup before any repair, as a habit. If the iMac cannot start and you need files off it before deciding what to do, we can copy them off a readable drive, from $249.

Does Apple still fix the 27-inch iMac hinge for free?

No. Apple's program for the Late 2012 and Late 2013 27-inch, which covered units shipped from December 2012 to July 2014 for five years from purchase, has expired. It was never published on Apple's website either; it was communicated to service providers. Our hinge repair is from $299 and includes removing the display, stripping the internals and refitting the display with new adhesive.