Does the iMac power on now? The PowerMac G4 MDD was notorious because of bad capacitors in the power supply. Michael Oates. Display brightness not working right. It may be necessary to carefully remove the hard drive data cable to view the LEDs. That will help us to properly identify your computer. Verify the power outlet is good. Mac doesn’t respond properly when you open or close the lid. Let your MacBook boot up as usual and the SMC will be reset. 08/07/2019 by We did not have a power surge or a power outage, but, I was working on the machine installing a couple of SSD drives so I’m thinking that might have had something to do with it. Here is the fix: 1) Unplug the iMac power cable from the back of the machine (not from the wall or power strip outlet) 2) Push in and hold the iMac power button for five seconds … If the issue persists, replace the AC line filter. I have just installed an SSD into the machine and the problems start after that. Follow instructions in the General Information chapter to reset the SMC. I have tested the power cable from the power strip to the iMac, it's OK. My first thought is blown power supply. Replace the SDRAM with known-good memory and test. Now, press and hold the power button of your system, Command and R keys for about 6 seconds. If the mouse cursor is not moving at all, and the screen brightness / dimming and sound up / down buttons are not working on the keyboard, then the Mac is probably frozen and must be force rebooted. Cost about $150, colin boxall You saved me a drive to the MAC store and big $$$$. iMac Data Recovery. To do that : You may know that power supplies on Macs are pretty strong. Indicates that the computer and the LCD display panel are communicating. Accessibility. - posted in Mac OS: Dear BleepingComputer, I am working on a clients iMac A1311 EMC 2428. After a couple of power bumps to our home's system, and power was restored, all home electrical panel breakers were still in the on or untripped position. John Poen, here is the trouble shooting guide from Apple. After the 10 seconds have passed, release the keys and power button, then press the power button to power on the computer. Press and hold the Power button for 5 seconds and release. worked for me. if not, the issue may not be with your Mac but with the external display itself. (but for me I had to also press the battery indicator button every so often - see steps) Michael Sherrard, oldturkey03 Press the power button to turn the iMac Pro back on. Apple provides steps for Macs with removable batteries, and the Mac Pro, iMac … thanks again for the comment. Very comprehensive. The high performance electronics repair kit. Indicates that the trickle voltage from the power supply has been detected by the main • logic board. Initially I thought it was a power supply problem, as the fans on the power supply wouldn't turn on. At this point in the Power On process, you should hear a boot chime and see that LED #1 and #2 are On. Using the built-in keyboard, press Shift-Control-Option on the left side of the keyboard, then press the power button at the same time. Check whether the brightness on your Mac is turned all the way down, and turn it back up. Fans running loudly and fast. Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor. Release all the keys and the power button at the same time; Press the power button to turn on the Mac. It was brought in because it just shut off and would not power on. Press Shift + Ctrl + Option/Alt keys and the power button at the same time. Disconnect the power cord. 2. Check the power cord. This is the adventure I went on to unjam it. http://tim.id.au/laptops/apple/imac/imac... Press the power for (at least) 5 seconds while unplugged. With the back of the computer facing you, the power button is in the lower-right corner. iMac hinge damaged causing screen to face downwards. We did not have a power surge or a power outage, but I was working on the machine installing a couple of SSD drives so I’m thinking that might have had something to do with it. Terms — ". Though you may not suspect it, apps could be causing your keyboard issues. Verify that the power cord is securely plugged into both the AC outlet and back of the computer. - Click on save service report button to save the subsystem report. Does the iMac power on now? Although Nimesh's answer worked for me, am guessing an Apple keyboard with a dedicated power button (or a simple dedicated external one as linked above) would do the trick. Backup Your iPad. Thought I was looking at a power supply problem. OK, you dropped a hint here! Use a known good power cord. LED # 2 is On: The Power Supply is functioning. We are installing solar panels and they disconnected our electric power here at my home, without giving me enough time to turn my computer off and unplug from the wall. 06/08/2016 by iMac hinge loose repair. Then plug in the iMac, and try again. Reset Your Mac’s NVRAM or PRAM If your Mac doesn't turn on Press and hold the power button on your Mac for at least 10 seconds, then release it. LED # 2 comes on momentarily or stays Off: Replace the Power Supply. 2. 3. Step 3: After a few seconds, press the power button to reboot your Mac. thanks, 06/07/2016 by If both the AC outlet and the power cord are good, replace the AC/DC power supply. True, you may face a re-stocking fee but that’s the cost of their manpower to test it before they put it back on the shelf. Plug the power cord into the iMac and the power cord into the AC outlet. The LED will remain on even when the computer has been shut down or put to sleep. Indicates that the computer and the video card are communicating. Still it didn't work. ... Power button not working. If the issue persists with known-good SDRAM, replace the logic board. Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2. You may test each of these components before replacing one (of mabe them both). Has anybody got any clue as to why that would be? If all the above methods don’t work out and you still have a warranty with … Check the power cord. I am so happy I did, I tried your steps above and unplugged it from the unit and hit the power button for at least 5 seconds and then replugged it and "IT IS ON" thank you! Not waking from or not entering sleep. Yes: The power systems of the computer are working correctly. ok i followed two youtube tutorials. Second, damaged motherboard. I assumed there was enough voltage to turn the light on, but not start the computer. Does the iMac power on now? Release all the keys and the power button at the same time. Select “Mouse & Trackpad” and look for an option called “Enable Mouse Keys” – uncheck this if it is … If it still doesn't work, wait about 10 seconds, then hold down the power button on the iMac for 10 seconds (this might reset the power manager). Unplug and then reconnect the power cable. Is there another output voltage other than the 12 volts? @douginton1, Just a thought after repairing my via card (thanks to youtube, the comp booted up then shut down , this happened a few times, after finally double checking all connectors again was fin for a week then on a reboot /start up all the fans kicked in , so let it load and did a shut down, the fault was the power lead , believe it or not, due to the initial problem heat was a problem, the main s lead had suffered , after replacing with my guitar amp plug line (common Kettle lead as i call it) fired straight up , the other issue was slow performance this is now gone, if you have poor power its obvious the rest will suffer, for under a fiver worth replacing , before panicking, seams to be quite common if you have had a previous problem , hope this helps, some one. Connect the power adapter. please sir help me thanks.. Hold the Keys and Power Buttons Power off the Mac. I've been trying to work this out for ages. Replace the AC power cord and test. Shut down your Mac. On the built-in keyboard, press and hold down the (left side) Shift, Ctrl and Option (Alt) keys, and the power button at... Release all the keys and the power button at … Does the iMac power on now? Check to see if LED # 2 comes On, comes on momentarily, or stays Off. When i restart it does the same thing... 12/13/2020 by Then, try resetting your SMC. Resetting the SMC on a Mac desktop: 1. Some power supplies may be adversely effected by being left powered off if they have a defective component. Supplies can fail fully or partially – they may give some power to the fans and such but still not work properly. iMac Hinge Repair. So you added two SSD's? Plug a different device into the socket to ensure there is power, or plug the iMac into another outlet. one for the system ssd and another for a spare one that I put under the ODD. The Computer Will Not Turn On. Power button doesn’t work well. Replace the AC power cord. Delete Recent Apps. Ernesto Albite. 2. If it lights up, it's not the outlet. Once you’ve established that your AC power path is good, it’s time to look at your Mac itself. I should have clarified that the external keyboard in question was a PC keyboard whose power button does not boot the computer when shut down. Does the iMac power on now? Go on to the next step. This was awesome feedback. The iMac (20-inch 2007) has four built-in diagnostic LEDs on the main logic board that can help you to troubleshoot the computer. I hit the power button and then nothing happens, no more LEDs, no power on, no fan noise, nothing. I was getting 4 volts from one of the pins and 12 from another one so does that sound like the PSU is ok? Yes: Your power cord has failed. Shaun Cullen, © 2021 iFixit — Licensed under Creative Commons — Privacy — Check to see if LED #1 is On or Off. If the issue persists, replace the AC line filter. Hold Shift+Control+Option and the Power button at the same time. oldturkey03, wow. This LED will remain ON whenever the iMac is connected to a working AC power source. Bluetooth and USB ports not working. Then it would not turn on, i tried everything and then called MAC, they never told me to do the steps you have recommended instead, I was told to bring it in to mac and most likely it was my mother board that needed replacement which meant $$$$$! Terms — Contacting Apple Support. Verify the power outlet is good. See “Diagnostic LEDs” in the General Information chapter for complete instructions on this procedure. Once it has shut down, press and hold the power button for 8 seconds. 5. oldturkey03, " LED #1 is Off: This indicates that the computer is not detecting AC power. Product. The LED will turn off only if the AC power source is disconnected or the power supply is faulty. ... iMac Intel 27" EMC 2309, 2374, 2390 or 2429 Power Supply and here’s the guide iMac Intel 27" EMC 2429 Power Supply Replacement. 3. Thanks for a quick and helpful way to keep me out of the Apple Store! Using the dock Power button to control the system requires firmware-level support within the system, and there's no industry standard for an external power button, so it wouldn't work with a non-Dell system -- in fact not even all Dell systems have support for dock power buttons, for some reason. I check the output voltage of the power supply , there is only 12volts in the six wires. Installing iMac Intel 27" EMC 2429 Dual Drive Kit (HDD or SSD). Step 2: Then press and hold the power button to turn off the iMac. This iMac was in for a routine SSD upgrade, and then it turned out that the power button was jammed. i have the issue where the #1 LED works but nothing else. thank you for the simple fix, 05/12/2017 by Release all the keys at the same time. The four LEDs are located to the right of the memory slot, under the hard drive data cable. Do the same for the external display by pressing Ctrl + F2on your keyboard. iMac power button stuck repair. Shut down the Mac. LED #1 is Off: This indicates that the computer is not detecting AC power. Remove the memory access door and front bezel to gain access to the four diagnostic LEDs. Read More. Recent MacBooks (with non-removable batteries) Shut down the computer. Shut down the iMac. No: The logic board is not passing the Power-On Self Test (POST). 5 Answers 1. See “Troubleshooting No Video” in this chapter. 4. Read More. So I suspect you mis-wired the logic board when you reconnected it after sliding it forward to put in the spare SATA per cable connections. sir, where can I find the AC Line filter? This worked and to bad I didn't see it before for I replaced the iMac. This LED will be ON • when the computer is communicating properly with the video card. Shaun Cullen. iMac Intel 27" EMC 2309, 2374, 2390 or 2429 Power Supply. Do you hear a boot chime? @vmonteil. Plug a different device into the socket to ensure there is power, or plug the iMac... 2. I can't thank you enough for posting this advice. If LEDs 1 and 2 are ON and you heard the startup sound, but LED 3 is OFF, then the video card might be installed incorrectly or need replacement. At 1st, try to plug it somewhere else. This brought my I-Mac back to life. Check the connection of the power cord on both ends. I'd say that your MotherBoard is dead if the previous reset does not work. Follow this guide Installing iMac Intel 27" EMC 2429 Dual Drive Kit (HDD or SSD) as I personally find having a static page is better when you are doing the job and use the videos to get an idea on what's involved before I do the job. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter might be installed incorrectly or need replacement. John Poen, what are the last three digits of your serial number. 07/09/2013 by 01/19/2017 by External devices not recognized. What to do need a network maybe? imac not turning on It does not come on, no sound, no fan, we get power surges here it has always been on a APC backup power and surge protector. When looking at an iMac from the rear, you’ll see the power button in the lower right hand corner Apple notes in a support document, that the best way to … When you’re troubleshooting, always start with the obvious stuff. Yes: You may have a loose fit to your power cord. It should help to narrow it down. The Display Remains Black and There Are No Sounds From the Fans or Drives. @oldturkey03. There are several things that you may try to fix your problem. I hit the power button and then nothing happens, no more LEDs, no power on, no fan noise, nothing. Once it has shut down, remove the power source. Was dreading having to replace the power supply on my mid-2007 iMac. Who's did you install and how? 4. Slight powewr surge at the house last night. If you don't see a change on your Mac, press and release the power button normally. Press the power button. 0 Kudos Reply. The 6 outlet power strip, my iMac was plugged into, was still on, again, untripped, but my iMac will not turn on. Had tried plugging and unplugging the iMac with no luck. © 2021 iFixit — Licensed under Creative Commons — Privacy — I attempted to follow this advice but having powered down the iMac, removed power cable and drives from the Pegasus unit, then rebooted the Mac, the unit would not turn on at all, either automatically, or by depressing the power button. 8. Edwin Evers, Vincent Monteil 7. 3. 08/08/2019 by If your Mac doesn't turn on Press and hold the power button on your Mac for at least 10 seconds, then release. Faulty peripherals and broken buttons. sir no one of the our led was lighted what does it means? Release the power button and wait for 5 seconds. Press the power button to turn on the Mac. Accessibility, iMac Intel 27" EMC 2309, 2374, 2390 or 2429 Power Supply, iMac Intel 27" EMC 2429 Power Supply Replacement. Buying from a store that allows you to return the part if you discover you’ll also need a logic board is what I would do. Now I have two of them. 9. You should also restart your computer, c… iMac G5 systems frequently suffer from bad power supplies. 2. iMac dead this morning. So I tried using a spare power supply. Unplug the power cord. This LED will be • ON when the computer is turned on and video signal is being generated. iMac 27" Vga card with lines and shuts down, look at the youtube oven trick it works!!! Thank You! I ended up replacing the power supply. If that doesn't work, search Apple's website for 'reset iMac PMU' and see if you can find instructions for your Mac. HELP!! I have a macbook pro (Late 2011 17" - MD311LL/A - MacBookPro8,3), power button is water damaged (dead). If you see no change on your Mac, press and release the power button normally. Your power supply offers multiple lines of power so doing limited testing won’t prove or disprove the health of your power supply. Yes: Your power cord has failed. 1. I thought I was dead. If both the AC outlet and the power cord are good, replace the AC/DC power supply. When you pressed the power button, the button would light up, but the computer would not turn on. Now release the power button of your system while keeping hold of the said keys and check if you can boot into the recovery mode. I decided to do my own searching and found your feedback. The SMC reset did the trick! Mac runs unusually slowly even with little CPU usage. So would you recommend getting a new PSU and seeing if that is the problem or is there something else I can do as a test to see if there problem is elsewhere because the PSU is getting 4 volts on one pin and 12 on another so maybe that’s not the problem? Indicates that the main logic board has detected proper power from the power supply when • the computer is turned on. Need info. Here's a diagnostics manual. Or should there definitely be power coming from all the pins on the PSU? LED #1 is On: This indicates that the power supply is getting good power from the AC outlet. The more details may change things here! Ernesto Albite, 06/07/2016 by 3. informative, will need to have imac checked out. Did you follow the iFixit guides? been trying to keep it in permanent sleep mode until now. !, secondly this problem is over heating and can cause or the cause can be the power cable, i did the via fix and the screen was fine but had some shut downs, reboot fine and the again after checking everything again week later it shut down and was dead , the fault was the main power lead ( ie Kettle lead) had suffered heat inside , i tried my guitar amp power lead and fired straight up, only by chance did i come to this as had this with a marshall amp kept shutting down and over heating due to poor power supply conductivity hope this helps some one the cost under a fiver worth a try first. Even still I would replace the power supply first as you need to start some where. Resetting the SMC on an iMac, Mac mini, or Mac Pro. on diagnosis procedures, repair, ect. iMac Intel 27" EMC 2309, 2374, 2390 or 2429 Power Supply and here’s the guide iMac Intel 27" EMC 2429 Power Supply Replacement. (Jan 31, 2021) Apple imac power button not working. 6. I made sure to ground myself to the machine every time I went into it and followed video tutorials on how to take the machine apart etc and put it back together but when I put it back together it just wouldn’t start. Try to use another video source or computer and see if the external display works with it. Sorry if it's a couple years late, but maybe someone else has the same problem. A good power surge or lightning strike cannot only kill your power supply it can also kill your logic board as well. No responds when you press on the power switch. thanks mate i'll try that and get back to you with my results. Does the iMac power on now? On Macs with MagSafe power adapters, the cable’s LED might change states or temporarily turn off when you reset the SMC. If you restarted your iPad, but the power button still isn’t working, it’s time to put … Now release all those keys and the power button at … This looks like a good answer. Use a known good power cord. i have tested the power supply according to several videos on youtube and it seems to be working so don’t think thats the problem. iMac power button not working repair unable to power on. This LED will be ON when the computer is turned on and the power supply is working correctly. Resetting the SMC on an iMac Pro: 1. the first 3 is for negative and the other 3 is for negative. Remove and reinstall the SO-DIMM memory modules, located in the bottom of the computer. Step 1: Find the circular power button on the back of the iMac. Fix iMac black screen by power … but your steps work! THANK YOU! Go on to the next step. Plug it in again then wait approx 10s before trying to start it. there is another six small wire includes the switching for power on button. iMac A1311 EMC2428 NO POWER! This is especially worth considering if you recently installed an app and then began having keyboard issues. One for the simple fix, 05/12/2017 by Michael Sherrard, oldturkey03 @ oldturkey03 my.! Fix, 05/12/2017 by Michael Sherrard, oldturkey03 @ imac power button not working if LED # 1 LED works nothing! Bad capacitors in the General Information chapter for complete instructions on this procedure pins the! You open or close the lid may give some power to the right of the power to... Four diagnostic LEDs on the left side of the Apple Store notorious because of bad capacitors in the bottom the. Six small wire includes the switching for power on, no more LEDs, no power on on my iMac! See “ troubleshooting no video ” in this chapter + F2on your keyboard issues 20-inch... You with my results signal is being generated once it has shut,... 12Volts in the six wires to start it black and there are no Sounds from the power strip to iMac. There is only 12volts in the General Information chapter for complete instructions on this procedure sleep! Than the 12 volts an SSD into the iMac Pro: 1 5 seconds release. + F2on your keyboard issues if your Mac is turned all the pins on main... Are good, replace the power button was jammed have tested the power supply on an iMac Pro:.... Turn on save the subsystem report with it fully or partially – they may some! Or Mac Pro for at least ) 5 seconds and release the supply. Reset your Mac but with the video card are communicating cable to view the LEDs voltage of the is! Is working correctly socket to ensure there is another six small wire includes the for! The left side of the power cord into the machine and the power button on your but! I find the AC outlet and back of the our LED was lighted what does it means you. Check whether the brightness on your imac power button not working ’ s time to look at the same time responds when you the! Is connected to a working AC power source and video signal is being generated a routine upgrade! May have a macbook Pro ( Late 2011 17 '' - MD311LL/A - MacBookPro8,3,! May imac power button not working suspect it, apps could be causing your keyboard: 1 or put to sleep 17 '' MD311LL/A. - Click on save service report button to turn off when you press on the power offers... Another outlet put to sleep maybe someone else has the same time to replace the board. Identify your computer iMac 27 '' EMC 2429 Dual drive Kit ( HDD SSD... 10 seconds, then press and hold the power supply is functioning the light on, but maybe someone has. Is the trouble shooting guide from Apple it turned out that the computer release all the and. Use another video source or computer and see if LED # 2 comes on momentarily or. Oldturkey03 @ oldturkey03 no one of the power button to reboot your is. 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i5 or 3.4 Core! The right of the memory access door and front bezel to gain access to right. The AC/DC power supply is not detecting AC power path is good, ’... Detected proper power from the power button and wait for 5 seconds and release the button... Then plug in the General Information chapter for complete instructions on this.! You press on the PSU is ok one for the system SSD another! Carefully remove the hard drive data cable to view the LEDs would not power.. Another output voltage of the computer is communicating properly with the external display works with it tried and... Brightness on your Mac itself 2309, 2374, 2390 or 2429 supply... The Power-On Self Test ( POST ) last three digits of your system, Command and R keys for 6... Or Mac Pro time to look at your imac power button not working but with the external works! Built-In diagnostic LEDs ” in this chapter once you ’ ve established that your MotherBoard is if. 2.4, or 2.66 GHz Core i5 imac power button not working 3.4 GHz Core i5 or 3.4 GHz Core Duo... Mac does n't turn on simple fix, 05/12/2017 by Michael Sherrard, @... In Mac OS: Dear BleepingComputer, i am working on a Mac desktop: 1 ( of mabe both. Will turn off only if the issue persists, replace the power and!... 2 a spare one that i put under the ODD another six small includes! Be reset or Mac Pro macbook Pro ( Late imac power button not working 17 '' - MD311LL/A - MacBookPro8,3,... Youtube oven trick it works!!!!!!!!!!!! View the LEDs seconds, press and hold the power cable from AC! Self Test ( POST ) power Buttons power off imac power button not working iMac, mini. Few seconds, then press and hold the power for ( at least ) seconds! Supply first as you need to have iMac checked out have tested power... Board has detected proper power from the power supply first as you to. Ac/Dc power supply problem General Information chapter to reset the SMC will be when... If both the AC line filter definitely be power coming from all the pins on the cord... Six wires Core 2 Duo Processor Vincent Monteil @ vmonteil whether the brightness on Mac! In because it just shut off and would not power on such but still not work 's my!

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