Apple Genius Bar Fixed My Keyboard Doesnt Work Again

1. Symptoms of MacBook not turning on

When yous press the Power push button or Touch ID button on your Mac, if you don't see any images, video, or visuals of any sort on your display, if you don't hear a startup chime, and if you don't hear any fan or spinning drive dissonance, so nearly likely your MacBook is non turning on. In other words, your Mac has no sign of ability at all.

If your MacBook Air or MacBook Pro won't turn on after a liquid spill, come across our article Spilled water on a MacBook Air or MacBook Pro, what to do now?

If your MacBook won't start up properly, you only come across a question marker folder flashing in the centre of your MacBook screen, come across our article How to fix the Mac Question Marker Folder issues

If your reckoner only works with the adapter plugged in, you lot have a MacBook not charging issue. Check out our commodity 12 Ways to fix MacBook bombardment not charging issue

ii. Why is your MacBook not turning on?

A MacBook consists of the following components: a screen, keyboard, touchpad, bombardment, SSD drive and a logic board. Any of these components gone wrong could cause your MacBook won't turn on.

From the moment you press the power button or Touch ID button, to the MacBook displaying the image on the screen, your MacBook has gone through a series of complicated power-on events. The System Management Controller (SMC) governs the entire MacBook power-on process.

Once the SMC detects that you have pressed the power button, the SMC volition co-operate with the Intel chipset to create a series of "mini power supplies" of unlike voltages (e.g. 5V, three.3V, 1.2V, one.8V, etc.) in a precisely divers sequence. These "mini power supplies" will ability your Mac'southward memory, difficult bulldoze, CPU, Wifi, keyboard, trackpad and screen.

If the SMC has not received power, or failed to part, or failed to create the required "mini ability supplies", your MacBook won't turn on.

For deeper technical details of the MacBook power-on procedure, see our article How does my MacBook ability on?

3. Fix Mac not turning on trouble step-past-stride

There are lots of reasons why your Mac won't turn on. We'll run through various checks, tips and tactics to become your Mac back to piece of work again.In the last section, nosotros will show yous how professionals repair Mac computers in the workshop and the resources and equipment used.

iii.1 Cheque for any faulty external devices

If your Mac detects the accessories attached to it have short circuits or draw an unusual amount of current from the Mac, the SMC will cut short the power-on process. This is a safety measure to protect your Mac. You tin easily rule out if whatever device is the culprit.

Unplug all the accessories attached to your Mac including printer cable, USB hub, external USB hard drive, HDMI cablevision, and Mini display cable, even your Magsafe or USB-C charger. In other words, you just allow your Mac stand up lonely. Information technology could be one of your peripherals causing your MacBook Pro or MacBook Air non turning on.

Occasionally, this simple footstep would fix the "Mac doesn't turn on" problem.

3.2 Reset the SMC or T2 chip

The SMC is responsible for receiving your action (press power button) so starts and manages the entire ability-on process. You may consider the SMC as a tiny computer running a tiny operating organisation and the software sometimes could get wrong. If this happens to your MacBook, y'all need to reset the SMC.

You will Non lose any data in your hard drive by resetting the SMC.

Follow these steps to reset the SMC on a MacBook with not-removable bombardment:

1. Press and hold the power button for 10 seconds to ensure your Mac returns to its OFF state.
2. Connect the MagSafe charger; concur Shift-Control-Option on the left-hand side keyboard and the power button simultaneously for 10 seconds.
3. Release all the keys.
4. Press the power push to plow on your Mac. Now you take successfully reset the SMC.

Apple integrated the SMC chip into the Apple T2 Security chip starting from 2018. Follow these steps to reset a MacBook with a T2 chip:

1. Printing and hold the power button for ten seconds to ensure your Mac returns to its OFF state.
2. Press and hold these 3 keys for 7 seconds: Command, Option keys on the left-hand side and Shift key on the right-hand side.
3. Then press and hold the power button as well. Now keep holding all four keys for another 7 seconds, and so release all four keys at the aforementioned time.
4. Look a few seconds, and so press the power push button to turn on your Mac.

Resetting the SMC on MacBooks with removable-batteries is uncomplicated.

1. Press and hold the power button for 10 seconds to ensure your Mac returns to its OFF country.
2. Remove the power adaptor and the battery from the MacBook.
3. Concur the power button key for 5 seconds to belch any remaining electrical energy in the capacitors of the SMC circuit. Alternatively, you can wait for a few minutes until the capacitors discharge naturally.
4. Re-install the battery back to your MacBook. Now you take successfully reset the SMC.

If SMC reset can't prepare the problem, keep to the adjacent stride.

3.3 Check for a flat battery

If you lot haven't used your MacBook for a long period of time or y'all take an aged or a bloated bombardment shown as below, the battery could have been completely discharged, causing your MacBook not to turn on.

The pre-2012 MacBook models have a battery check push button and a battery status indicator on the correct-hand side of the case. Push this push button. If yous don't encounter any calorie-free, and then you have a flat bombardment.

You demand to make sure your MacBook is receiving ability from either the MagSafe or USB-C charger. Check if the ability cable is undamaged and securely plugged into your Mac and a working electrical outlet. If you're not sure about the outlet, exam it with a lamp or a mobile phone charger.

Use the correct power adapter for your MacBook model to accuse the MacBook for almost 5 minutes. If possible, try to use the original power adapter that came with your Mac.

If the apartment battery causes your MacBook Air or MacBook Pro not turning on, most Macs volition ability on automatically if you connect a working charger to it. Nevertheless, there are some models of MacBooks that crave a minimum battery power earlier the Mac can turn on. So wait for v minutes. Let your charger top up the battery in a higher place the minimum level.

If y'all can see a green or orange lite on the MagSafe connector, information technology means both your charger and the SMC in your MacBook are working now. The SMC has successfully communicated with your charger and then turned on the light. You may try another charger if you don't have a light on the connector.

Later 5 minutes, press the power push button to encounter if your MacBook can turn on. If your Mac still won't turn on, or if you don't have a calorie-free on the MagSafe connector, go on to the next step.

iii.4 Perform a ability cycle

A MacBook has iii major states: Off, Sleep and On. Performing a power cycle means you strength the MacBook return to Off state.

In a pre-2013 MacBook Pro, in that location is a sleep indicator on the front edge of the case as shown below. When the MacBook enters to sleep mode, this slumber indicator lite will flash. Apple removed the sleep indicator in the recent models. For these newer machines, if yous tin can't see anything on the screen, it is difficult to tell what state your MacBook is currently in.

If your MacBook gets stuck in the Sleep state for some reasons, your MacBook will non respond to normal wake-upwardly signals such as opening the hat, pressing the power button or clicking the touchpad. You lot demand to force the MacBook dorsum to Off state past performing a ability cycle.

Press and concord the power button for ten seconds then release the button. Now you lot have forced the Mac returning to Off country. If you have a spinning hard drive in your Mac, yous may hear a squeak as the hard drive power is forcibly cutting. If your MacBook has an SSD drive, you won't hear anything.

Now you know your Mac is in Off state. Press the power button once more to see if your Mac can turn on.

If performing a ability cycle tin can't fix the problem, go on to the next step.

3.five Cheque for a faulty screen

When you see cypher on the screen, you may think that your Mac won't turn on. Simply that is not always the example! Your Mac may be ON already; only the screen is not working. Therefore, information technology is vital to double-check any signs of power including sounds and lights to avoid a misdiagnosis.

Cheque for sounds

Exercise you hear a startup chime? If you do, your MacBook is already on. Wait for 1 or 2 minutes to check if there is any display on the screen, even a quick flashlight. If you don't run into anything on the screen, your Mac most likely has a screen problem. This is not practiced news as the screen is one of the virtually expensive components next to the Apple logic lath.

Pick up the MacBook; place the vent holes (betwixt the ii screen hinges) nearly your ear. Practice you hear whatever noise from the fan, mechanical hard drive or super bulldoze? Do you feel any air coming from the vent holes? If you hear the dissonance or feel the air movement, your Mac is on and your Mac has a logic board trouble. Your Mac has already started to turn on but somehow got stuck in somewhere.

Check for lights

If you don't see annihilation on the screen, polish a flashlight through the Apple logo on the back of your screen. If yous can run into a dim image, press the screen "brightness up" button on the keyboard a few times to increase the screen brightness. If y'all nonetheless get the dim image, you lot accept a screen backlight problem. The screen backlight problem could be caused past a faulty screen or a faulty logic lath.

Press the keyboard backlight "brightness upwardly" button a few times, if yous can run across the keyboard backlight, your Mac is ON already. You may accept a screen trouble. Both xiii" and 15" MacBook Pros manufactured from 2016 to 2017 are prone to develop "flexgate" issues. If you lot have this type of MacBook Pro, yous may need the flexgate repair service to fix your faulty screen instead of replacing information technology with a new one.

Press the Caps Lock central, if y'all can encounter the light on, your Mac is running. You may likewise have a screen problem.

Connect an external monitor to your MacBook via a mini display port, thunderbolt port or HDMI port. If you have a display on the external monitor, you lot definitely have a faulty screen.

three.6 Cheque for a faulty RAM

If you hear repeating beeps from the Mac, your Mac could have RAM faults that are causing your Mac to not turn on.

If you hear one beep, repeating every v seconds, it means your Mac tin't detect any RAM. If you recently replaced or upgraded your computer's RAM, check to see if it was installed properly.

If you get three successive beeps, and then a five-2nd interruption and keep repeating, your Mac RAM doesn't pass a data integrity cheque. If you recently replaced or upgraded your figurer'southward RAM, check to see if information technology was installed properly. You likewise can endeavor unlike make names of retentivity modules.

If yous have a MacBook Air or a MacBook Pro 2012 onwards, the retention fries are soldered on the logic lath. This pattern significantly increases the reliability of the memory circuitry as information technology gets rid of the troublesome RAM slots. If you hear beeps from these MacBooks, you accept a logic board problem. You lot demand component-level repair service to fix the logic board. The cost varies from $300 to $600 depending on the Mac model.

3.seven Check for a faulty trackpad

The SMC is powered past an "always-on" power rail chosen PP3V42_G3H. The trackpad shares this power track with the SMC. If the trackpad has a brusk circuit, especially afterwards a water spill on the trackpad, the faulty trackpad could pull downward the power rail and the SMC will not be functional. Therefore the SMC will non respond to the action of the power push.

Open the dorsum console of your Mac and remove the trackpad cablevision from the logic board. Then press the ability button on the keyboard. If your Mac turns on, then you have a faulty trackpad. The trackpad is a less expensive MacBook component. You can buy a trackpad online for less than $100.

iii.8 Check for a faulty keyboard

The MacBook keyboard too shares the "e'er-on" power rail with the SMC. If a faulty keyboard pulls downwardly the power rail, the SMC won't piece of work and won't reply to the power button signal.

Likewise, if the power button on the keyboard fails to ship the point to the SMC, your MacBook Pro or MacBook Air won't turn on. These types of faults are mutual after a liquid spill on the keyboard. Sometimes the keyboard stops operation straight afterward a h2o spill, and sometimes the keyboard would stop working afterward a few months of spillage.

Remove the keyboard connector AND the battery from the logic board, and then connect a MacBook charger to the charging port. Your Mac would automatically power on if the fault is in the keyboard. A MacBook with Intel i3, i5, i7 and i9 CPU will automatically power on if you remove the battery and connect a charger to it

three.9 Restore corrupted T2 security chip firmware

Starting in 2018, Apple integrated the SMC chip to a larger multifunctional scrap chosen Apple T2 security chip in the new MacBooks. The T2 chip takes over the duty of SMC. If the T2 bit is not functional, information technology won't reply to the ability push and your MacBook won't turn on.

When you update your Mac's macOS, for example from Mojave to Catalina, and something goes wrong in the centre the process, y'all could brick your Mac.

Apple time to time includes device firmware update (DFU) in the normal security update or version update. This DFU will update your Mac'due south FIRMWARE. When you install the macOS update that contains a DFU, you not but update the macOS software in your SSD drive, but also the firmware in the T2 bit. Therefore y'all don't accept to purchase a new Mac in order to run the new macOS smoothly or fully optimise the new features.  Nevertheless, if the firmware update failed to consummate the whole process for some reason, you could end up with T2 fleck firmware corruption. In other words, you may have bricked your Mac.

To fix a bricked Mac, you need a working Mac and download the firmware from Apple'due south website. And so yous force the bricked Mac into DFU mode so you can transfer the firmware to the bricked Mac via a USB cable shown as below:

1. Go to Apple's website to download the app Apple Configurator ii. You may need to update to the latest macOS to run the app. Open the app and make sure your Mac is connected to the cyberspace.
2. Use your USB-C charger cablevision as a USB cable. Connect one end to any port of your working Mac.
3. Connect the other end of the USB-C cable to the Master port of your bricked Mac. The master USB-C port is the one on your left-hand side and closer to you.
4. Press the power push button or impact ID button for i second. While holding the power button, press and hold the Command and Option keys on the left-mitt side, the Shift primal on the right-hand side until you run into the big font text "DFU" showing on the working Mac. Usually, it will take about x seconds for the "DFU" sign to show up.
5. Release all the 4 keys at the same fourth dimension. At present your bricked Mac is in DFU style.
6. Go back to your working Mac, click to select the DFU device on the screen and select Action from the menu bar. On the pull-down menu bar select Advance and select Revive Device. Confirm the action.
7. At present the working Mac will download the correct firmware from Apple tree's server and install the firmware to your bricked Mac. This may take up to 5 minutes.
8. After finishing the installation, your Mac will automatically ability on. If you can see the Apple tree logo, congratulations! Y'all have successfully saved the bricked Mac.

3.x Check for a faulty bombardment data cable

The 15 inch and 16 inch MacBook Pros manufactured between 2016 and 2020 behave very differently. Different the other MacBooks, these models of MacBooks will not power on normally without a working bombardment connected to it even if yous connect a working charger to it.

In the new MacBooks with USB-C charging ports, the bombardment power terminals and data advice lines are no longer on the same connector. Instead, the ability terminals ("+" and "-") are continued to the logic board and secured by a T5 screw to provide better contacts. The data lines are connected to the logic board via a flex cablevision.

This tiny flex cablevision is prone to failure. If the battery fails, or the battery flex cable fails to contact properly, your Mac won't turn on. But if you connect the USB-C charger to it, it will show a charging bombardment symbol on the screen for a few seconds so turn off again as shown below:

If yous see this symbol, you lot most likely have a battery problem. Replacing the bombardment is very expensive if yous get it done by Apple tree stores or Apple authorised service providers. They volition supersede the whole top case including your WORKING keyboard, trackpad, bear upon bar, speakers along with the faulty bombardment. Of course, you accept to pay for all these components if your Mac is out of warranty. A third-party repairer may replace the faulty bombardment only at a depression cost.

4. Cull repair services - Apple vs. third party

If all the to a higher place attempts failed to set up your MacBook, y'all may consider using a professional MacBook repair service.

There are two types of services. The offset type is Apple Stores and Apple Authorised Service Providers (ASP). The 2d type is a 3rd-party repairer. We will hash out the pros and cons of these services.

4.1 Apple tree Stores and ASPs

We suggest you lot make an engagement with the Genius Bar or ASP to get a free diagnosis and quote, no affair if you intend to use their service or not. These are the services you can get from them depending on whether or not your Mac is nether warranty:

If your Mac is nether warranty, you lot don't have to worry about anything except for your data. They will replace the faulty component for free. Apple volition Non accept responsibility for your data or provide data transfer/recovery service. Therefore make sure the service volition not touch your data. If the service could cause data loss and you lot oasis't backed up your data on iCloud, you may need to support the data to an external hard bulldoze yourself or use a professional information recovery service.

If your Mac won't turn on due to a liquid spill, and the color of the liquid indicators has changed from white to red as shown in the photo below, you void the standard warranty. All MacBook models have liquid indicators near the entrances where liquid tin become in easily. The liquid damage indicators are usually under the keyboard, trackpad, and the edges of the logic board.

If you accept purchased AppleCare+ that covers h2o harm, Apple tree will accuse a $429 excess fee to get your Mac repaired.

If your Mac is out of warranty, you need to pay for replacing the faulty component. They provide high standard services and you don't take to worry about quality issues. Only the services are expensive. They don't repair individual MacBook components. Instead, they supercede multiple related components at a high cost. For example, if you accept a swollen battery, you have to supercede the top case, keyboard, trackpad, and touch bar all together even if they are still working beautifully.

If you purchased the Mac from a large department store, getting service from Apple directly tin can avoid unnecessary delay. Y'all won't need whatsoever middle agent to bargain with the repair.

If you take a faulty logic board, they may tell you the Mac is not repairable or quote a very high price for logic board replacement. This is the tactic to promote the new Mac sales. They will non tell you that there are some Mac repair specialists who can repair the logic board professionally at a fraction of their quote toll.

4.2 Third-political party services providers

The figurer service industry is not a regulated industry. The level of third-party services varies from superlative professionals to newbies.

Y'all tin easily observe a local figurer repair store fifty-fifty if you live in a remote small town. They may be very good at fixing your Windows software problems. They may be very adept at upgrading the hard drive in your Windows-based laptop or they may have done a expert job replacing your broken iPhone screen. But the majority of these stores lack the skills, knowledge and equipment to handle the complexity of Mac computers. If your Mac has a simple trouble such equally faulty trackpad or battery, you may consider these service providers. If you lot accept a logic board problem, avoid using these services.

There are some 3rd-political party service providers that offer services close to Apple tree'due south standard. They may accuse much less than Apple or ASPs. So it is worth getting a 2nd quote from these service providers addition to Apple's quote. Besides the prices, pay attending to the fault descriptions. Do they have the same diagnosis consequence? If non, talk to them for more details.

Customer reviews such equally Google Reviews, Yelp Reviews can provide lots of data about the service providers. Do they accept a high rating? How many reviews relate to Mac computers such every bit MacBook, iMac, Mac Mini? If the majority of the reviews are not for Macs, they may not have adequate experiences on Mac repairs. If the reviews take no details, only a few words similar "excellent" "highly recommend", discount the reviews.

In that location are some Mac repair specialists who offering component (fleck) level logic board repairs. Their skills and knowledge are well in a higher place the Genius Bar's technicians. Apple tree technicians may tell you that the logic board is non repairable. This is non true. The majority of faulty logic boards can be economically repaired with proper skills, knowledge and equipment.

These Mac repair specialists work on troubleshooting logic board components (or fries) such every bit transistors, resistors, capacitors, CPUs, GPUs and then on. They tin can identify the faulty chips amid the many thousands on the board and so replace them without damaging the surrounding chips. This is the most economical way to become your Mac working again. The logic board repair services cost $200-$600 depending on the Mac model.

If you lot cheque the client reviews of these Mac repair specialists, y'all will find the majority or even all the reviews are well-nigh Mac repairs. Lots of people would share the details of their repair experiences after they received outstanding services.

Unfortunately, at that place are only a handful of chip-level repair services available even if y'all live in a large city. So if you lot can't detect any in your city, you may consider sending your Mac to another city or country to get it repaired. Over again, check their customer reviews and talk to them before sending your Mac.

https://world wide web.rossmanngroup.com/Currently, We only offer mail-in service within Australia. If you are in the United States or other countries, contact Rossman Repair Group in New York. They offer a worldwide post-in service.

5. Professional person MacBook repair in action

In that location are two levels of professional MacBook repairs: basic repairs and avant-garde repairs. The Genius Bar technicians, ASP technicians and virtually experienced third-party repairers offer bones repairs only. The Mac repair specialists offering both basic repairs and avant-garde repairs.

v.one Bones Mac repairs

A MacBook consists of the following parts: a screen, keyboard, touchpad, battery, mechanical or SSD hard drive, DVD drive, Wifi carte, logic board and Cables connecting other parts to the logic board. The objective is to identify the faulty part(south) and supersede information technology.

This type of repair doesn't crave avant-garde electronics cognition, micro-soldering skills and understanding of MacBook logic board design. This is how they approach MacBook repairs:

1. Open up the lesser panel and inspect whatever liquid or corrosion inside the Mac.
2. If there is no water harm, connect a dedicated power unit of measurement to the MacBook. Bank check for the electric electric current being drawn from the power supply.
3. Press the power push button on the keyboard to encounter if there are whatsoever current changes. If at that place is no alter, remove the keyboard cablevision, bombardment cable and whatever other cables from the logic board and perform a "forced" power-on to the logic board. If there is still no change of current, the logic board is faulty.
4. If the logic board can be powered on manually, re-connect cables one by i to determine which one is preventing the logic lath from powering on.
5. Replace the faulty part(s) that prevent the Mac from turning on.
6. This office-replacing type of repair is entirely dependent on the availability of the spare parts. If there are no spare parts so at that place is no set up.
7. The logic board is the about expensive office of the Mac. If the logic board is faulty, the Mac will be considered every bit "not fixable" by this level of repairer. Apple may offering a logic board replacement at a high price.

5.ii Avant-garde Mac repairs

Logic board failures account for the majority of dead Macs. Repairing the failed logic lath is the most cost-effective way to salve your Mac. Simply component level service providers tin can deport out this type of chore:

1. Remove the logic board from the Mac case.
2. Inspect the logic lath using a microscope. Look for any obvious burned, corroded chips.
3. Supervene upon any faulty chips institute. Micro-soldering skills are required to replace the small chips. Replacing a larger flake such equally GPU or CPU needs a BGA rework station and the related skills.
4. Connect a defended power supply to the logic board. Based on the electric current being drawn from the power supply and other bones measurements, an experienced technician or engineer could lock-in the possible faulty circuit.
5. Work with Apple'south schematics (electronic circuit pattern diagram), follow the control signals, measure the relevant resistors, capacitors, ICs and voltages with a multimeter, measure the electronic signals with an oscilloscope or logic analyzer to narrow down the fault area. And finally, pinpoint the faulty chips.
6. Replace the faulty chips. Repeat this process until all the faulty fries are constitute and replaced.
7. Assemble the logic board back to the example. Test Mac'southward functionality and reliability with ASD (Apple Service Diagnostic) and other tertiary-party testing software. If the Mac failed to pass the exam, pull out the logic board and first troubleshooting again.

Pinpoint the faulty chips amongst the many thousands on the logic board is a circuitous reasoning process. In ane sense, it is like a meticulous forensic investigation. In order to perform the task effectively and economically, i needs specific electronic knowledge, detective reasoning skills, micro-soldering skills, experience, proper equipment and nigh chiefly: a comprehensive agreement of the Apple Mac logic lath designs – the electronic schematic diagrams.

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Source: https://www.it-tech.com.au/macbook-wont-turn-on/

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