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2014 iMac Chime Black screen No startup PRAM Battery replacement 

NorthridgeFix
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Комментарии : 106   
@NorthridgeFix
@NorthridgeFix 6 лет назад
Previous iMac video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ov9Qoy800eU.html
@chrisron1188
@chrisron1188 3 года назад
Sir can you jailbreak PS4?
@encinobalboa
@encinobalboa 2 года назад
Thanks for informative video. 1 in 10 chance was enough for me to try PRAM battery replacement. Saw three mobo LED's so it was not graphics problem. Old battery measured 3.1V which should have been good. New battery is 3.4V. Not sure battery was problem to begin with. Anyways, screen is working again so all is good.
@ThiagoCP
@ThiagoCP Год назад
@@chrisron1188 😂
@viktorville1234
@viktorville1234 5 лет назад
Thanks for your help, this is the problem of my Imac mid 2014.
@kanchour16
@kanchour16 6 лет назад
Great video thank you for sharing it helps a lot you just earned my subscription 👍
@donnierobertson3088
@donnierobertson3088 4 года назад
Great job again like always
@darkwarrior478
@darkwarrior478 3 года назад
Thank you for another wonderful tip!
@nelsmartis8324
@nelsmartis8324 4 года назад
Many thanks for the hint' My early 2009 iMac has the same problem. I already buy the PRAM Battery. I will download the iFIXiT instructions. Thank you
@f5tecnologia657
@f5tecnologia657 2 года назад
You’re the best, congratulations 🇧🇷
@elliottken8926
@elliottken8926 Год назад
I just love 💕💕💕💕💕 your works
@Riyaz-11
@Riyaz-11 4 года назад
Very helpful 👍
@Arthur-ez2ul
@Arthur-ez2ul 4 года назад
thanks bro, i will try this solution and tell you about it.
@vinstoncoelho6711
@vinstoncoelho6711 5 лет назад
Hi NortheidgeFix I have a late 2015 21.5inch 4K iMac which has the same issue as u mentioned in this video but I had a question for you and that is since my iMac has integrated iris pro graphics which are built it with cpu do you think the graphics in such case can go faulty or it could be the pram???
@spair2k
@spair2k 4 года назад
Hello! My iMac 21 mid-2014. During a system upgrade a power surge occurred. The computer shuts down and does not turn on anymore. More precisely, the hard drive starts, the turbine starts and 3 indicators on the motherboard are on. The fourth is off, most likely because I turned off the display during the test. Tell me, what can I do? PS. I tried to reset settings as descibet on apple support page like that CTRL+CMD+P+R and SHIFT+CMD+R+P combination. (I have wireless keyboard). And nothing at all. Thanks ahead for any advise...
@privateprivate8366
@privateprivate8366 5 лет назад
I hope I get as lucky. I have an Apple 30” Cinema Display hooked up to a Mac Pro 2012 (Westmere?). System boots but, for most boots, screen has start staying black with 3 blinks. After a few boots, screen may boot up.It is about time for a PRAM battery replacement though.
@BotoEnergy
@BotoEnergy 4 года назад
So what would you check next if LED 1 is on but LED 2 doesnt turn on? Already replaced the power supply unit so does that mean it’s either the GPU issue or Logic Board issue?
@maerhendle6540
@maerhendle6540 4 года назад
Hello there! Some problem with low voltage in battery, or else? It was tested, the battery have charge on 80% or 2,8v . What yours recommendations about replace in that circumstations - replace or not?. Thank you.
@pepitofelipe969
@pepitofelipe969 Год назад
Great job..
@lightsout6668
@lightsout6668 4 года назад
Watched all your iMac videos . I bought a 2011 iMac with HD removed ? When I opened it up no cables attached to screen ? Difficult to reattach the LVDS cable on both ends . Have a BLACK screen ? When lcd unattached I have 3 lights on, and 2.7 volts on PRAM battery when power cord unattached. Is this normal ? iMac was unplugged for quite some time . You have taught me a lot, just wish my eyesight was better . To many years welding. Thank you Great Tutorial videos . P.S. could it be just a faulty LVDS cable ?
@MrEtorkizuna
@MrEtorkizuna 2 года назад
thank you for your wonderful videos. I upgraded RAM ( 32*2 GB - OWC) and SSD ( Crucial 1TB) BUT my iMac 22.5 inches 2017 id. 18.2 does not start. Thank to your videos, I checked the green LED lights. 1st and 2nd are ON when I plug the computer. The 3rd one does not appear GREEN...So the problem is in the GPU. Maybe the problem is in the PRAM battery. When I installed new RAM without opening motherboard, I moved the PRAM battery which is very close...what do you think?
@michaelmaluenga7981
@michaelmaluenga7981 3 года назад
what if the second light wont turn on? i already change the logic board and the power supply.
@mikeanderson1994
@mikeanderson1994 3 года назад
It would be amazing to see how you changed it
@rayphillips5578
@rayphillips5578 3 года назад
Great thanks
@kyliebarrera1796
@kyliebarrera1796 3 года назад
I have A1418 imac which doesn't turn on. I replaced the power supply but still not working and no any light indicator on logic board turns on as well. Need some help to diagnose it.
@FernandoMagaldiCachoeiro
@FernandoMagaldiCachoeiro 3 года назад
Obrigado!
@betshala
@betshala 4 года назад
Hi, my second light flashes ... sometimes when it stays on the fans start working but no third light goes on... also the second goed on and off ... can you give me a tip please? Greetings from Belgium
@devaski
@devaski 4 года назад
Hi thanks for your video.. i replaced battery..still i could see only the first LED.. other 3 leds off... Any help? Ideas? Thanks in advance. iMAc 27
@bobbond8232
@bobbond8232 3 года назад
I am in the process of "fixing up" a 2014 27" iMac for my newphew. I wanted to swap out the Fusion drive for an SSD. I googled the procedure of splitting up a fusion drive. I winded up up with two distinct drives which were visible within Disk Utility. The original SSD stick and the HDD. Then I had the option of reinstalling macOS from scratch but I did not. Perhaps that was a bad decision. I decided to install the new SSD which contained the system back up. I booted the iMac back up, got a chime but nothing on the display (black display). I double and triple-checked the cabling and all seems fine. I tried booting into recovery mode but still noting on the display. The first three of the four lights on the motherboard light up. the top one doesn't. Would you have any solution for this situation?
@kgerakopoulos
@kgerakopoulos 3 года назад
just changing the battery solved the problem with gpu? I have ati 4670 imac 2010... I think I have a lot of sorted capacitors specially behind the chipset. I am wondering is the chipset or something else having black screen , no chime and fan working?
@theGamer93
@theGamer93 3 года назад
I have the same Modell but with soldered RAM and CPU. I don’t have GPU it is inside the CPU. I get two LEDs but no chime. CPU gets warm. I think maybe Ram or CPU is bad. Any hints where to start? I checked the board visible damages and measured for shorts and everything looks good.
@janquieldapper
@janquieldapper 4 года назад
Hello! I have a 2009 iMac 27 with Radeon 4850, allways when I power on appears a error message, if computer enter in stand by mode, when power on show the same error message. "Your computer restarted because of a problem..." After boot, show the error message, but for me nothing important... Video Graphics working well, after bake... I'm running Catalina now... but the message shows in High Sierra too. I need to change the processor thermal paste, I think this messages still showing because the 10 years old cmos battery is gone!
@soak000
@soak000 6 лет назад
My 2013 iMac 27" had similar problem. It would suddenly turn off. I haven't used it in a while and started tinkering with it. I can keep it running if I turn it on while plugging in the power, causing it to run with fan on at high speed. If I do an SMC reset to put fan in normal operation, it turns on for 5 seconds and then off again. All LEDs are lit properly on the logic board. Any ideas? Thank you.
@andrewkenny9994
@andrewkenny9994 5 лет назад
Hi, did manage to solve this problem? I have the same issue.
@whitepawrolls
@whitepawrolls 3 года назад
I have a bit of a puzzle myself. I have a friends 2009 24" imac here. They put in a new drive themselves, and since then its had no screen either internal or threw the external dvi port. Did the nvram reset first to see if that would help with no results. When I looked at it all 4 led's come on, and you hear the chime. After I give it a bit to 'boot' I poke the keyboard and hear the pongs you'd normally hear when the system is up, but you poke a button that does nothing. I've double checked all the connectors and still nothing. Tried pulling their drive out and booted just on a snow leopard dvd with no results. Put their drive in my 2010 mac pro and it booted fine. The only thing that I know was bad about it is they bought a drive with sierra on it from ebay. This imac only supports up to el capitan. I formatted their disk, and put el capitan on it before reinstalling it with no luck again. I would have thought the video card except it was working fine before the drive swap, and the working leds. Any thoughts?
@sapanbarman2443
@sapanbarman2443 5 лет назад
sir , cmos battery can exists in macbook like other leptops hp ,dell
@mariopic
@mariopic Год назад
got a imac 27" late 15 i get boot up chime i get all the leds on but get black screen notice back like cycles but screens black still
@uraees
@uraees 3 года назад
I reset my nvram command line and now my mac pro shuts down after few seconds of the startup chime, what could be a problem
@ryogaprayogo7585
@ryogaprayogo7585 4 года назад
How to fixed iMac 21.5 type A1418 the problem is when i conect the cabel electric to socket power, the electric power goes down😔, please help my question
@stantonchin4832
@stantonchin4832 Год назад
would this fix a boot loop, kernil panic....happened after going on google earth . screen flickered then cannot get into mac recovery or save mode or internet recovery
@rlc4967
@rlc4967 3 года назад
I've been a Mac guy for about 14 years, but I have to say I'm becoming disillusioned with Apple. Why put a component like an inexpensive battery in such an inaccessible place. Everyone knows that a 3 volt battery is going to fail eventually, and usually fails sooner rather than later. Apple's designs allow this pram battery to cause a lot of problems when the battery fails. Unless the customer is able to diagnose the problem correctly, and then is able to take the computer apart to replace a $2 or $3 dollar battery, this design flaw is going to cost the customer a lot of money.
@LeoLopesLL
@LeoLopesLL 2 года назад
Yes
@Dan-TechAndMusic
@Dan-TechAndMusic 2 года назад
It's because Apple wants you to replace your Mac more often than a PRAM battery fails, sadly.
@defenderharris
@defenderharris 4 года назад
Help..when I try to power on ..the start up chime starts but don't complete the chime..and nothing else happens.... battery?
@sabariya123gmailcom
@sabariya123gmailcom 4 года назад
Hi sir, how can fix iMac 21" USB port issue , now it's 4port are not working
@gimi3428
@gimi3428 5 лет назад
Hi. Imac 21" late 2012. No chime ,power rails ok, hdd makes noise when power button pressed and can shut down with power button as hdd turns off. Lite one diagnostic on only. Can't be power supply as all power rails are fine. Any suggestions? Thanks
@wadebee1522
@wadebee1522 7 месяцев назад
Same issue here. Did you ever find a solution?
@naveennaveeinfant3359
@naveennaveeinfant3359 2 года назад
Hi bro I hav an imac A1419 ...am able find only two indication lights 3rd light is not glowing
@Bikelife-TEZ
@Bikelife-TEZ 4 года назад
So what happens if you only get just one led on the first one
@AndyNuberg
@AndyNuberg 4 месяца назад
I will give it a try! Mine starts up with chime and that repeats it selve over and over again
@sabestianabraham8788
@sabestianabraham8788 3 года назад
Hi NorthridgeFix, your videos are really helpful. From this video i understand that my imac need a new GPU, can i upgrade my gpu " 27" 2.7Ghz Apple 109-c29557-00 iMac A1311 2011 AMD Radeon HD 6750 512mb Video Graphics Card"?, If so what is supported GPU for my imac. Kindly advice.
@amsyarmalek7
@amsyarmalek7 4 года назад
Hello Sir. I’ve encountered the same problem as well where my late 2013 iMac was having startup issue. After being Shut Down, it won’t turn back On when I pressed the switch at the back. The funny part is, it can only be turned on after I let the iMac unplugged for a week. This has been going on for 5 months. For your information, I have been using dual OS for 4 years already and this is the first time this issue happened. So, I guessed it didn’t involve any software problem. I thought the hardware(s) were the cause of problem until recently when the iMac can be switched On, I tried to do System Diagnostics for the hardwares on both OS and both results showed no hardware issue at all. The iMac recognize every hardware & no error found in them. But then, I saw something. My clock isn’t sync everytime the machine is on Screensaver Mode, Sleep Mode or being Shut Down. Is it because of the PRAM battery that need to be replaced?
@ranaharoonhacker
@ranaharoonhacker 3 года назад
Hi, did you find the solution? my iMac 2013 late did same but now it's still off since yesterday. i am suspecting Catalina update did this. Please let me on what conclusion you reached to?
@pamjeed321
@pamjeed321 Год назад
led 1,2,3 are on but no startup chime. pram battery replaced still not working. request help
@ZDProductionz
@ZDProductionz 4 года назад
Am I doing something wrong? The battery just falls out and doesn't every snuggly secure
@Depsoom
@Depsoom 6 лет назад
Hi NorthridgeFix, I have a 2009 27" iMac. I can hear it boot up when I press the power button. However, the screen immediately goes black within 2 seconds or so upon booting. I can hear it shut down when I press the power button. I tried unplugged it for a while and even Control + R and it the monitor still go black. Any thought as to what it could be the issue(s) and troubleshooting tips? Thanks .
@mattiel3987
@mattiel3987 5 лет назад
Did you ever get this fixed? I am having the same problem.
@linzkirk
@linzkirk 5 лет назад
This is very common on the 2009/2010 27", usually 1 of 2 things, the screen itself .try an external monitor, you can use HDMI on a tv, if you get a picture its more likely the screen assembly if not the its probably the GPU especially if it AMD, which means logic board replacement. also try SMC and PRam resets
@sclogse1
@sclogse1 2 года назад
Mine is a 2011 Imac. You know, one inch thick 27". Hoping like my older 24" that the PRAM battery is easier to replace. RIght now, my clock won't sync to the correct time, and web pages tell me they won't open because my clock is off, even though it's only off a few seconds.
@colinmf
@colinmf Год назад
What should voltage be on healthy cr2032
@tksalalah
@tksalalah 3 года назад
Hey some one help me I have imac model a1419 emc 2834. The problem is no chim sound on startup diagnostic led 1, 2 and 3 on . 4th led is off. I open lcd screen and removed led backlight connector from the main board giving voltage by led tester and I can see picture very clear. So which component need to replace any idea it is very hard get faulty component as there is no schemetic diagram for this model. Thanks in advance
@jericguillarte8530
@jericguillarte8530 2 года назад
Hello i have imac early 2008 the problem is black screen but the fan will work and no chime
@just4meandutoo
@just4meandutoo 3 года назад
Hi, thank you for your informative and educational video. I have a problem with my IMAC27 late model 2013 identical to the history of your client, however in my case, I was in front of the computer when I heard a soft popping sound, and the screen went black. Several reboots have concluded that the system "is" working but will not display any signs of screen visual. I understood from your diagnostic explanation that a number of LED 1- Powe to System LED 2- System Boot LED 3 GPU LED 4- Screen Connected. Question. Where do I look for after turning on the power for the LEDs? Thank you again for considering my question. USMC SEMPERFIDELIS
@ranaharoonhacker
@ranaharoonhacker 3 года назад
Hi, did you find the solution? my iMac 2013 late did same but now it's still off since yesterday. i am suspecting Catalina update did this. Please let me on what conclusion you reached to?
@feitjevandedag
@feitjevandedag 2 года назад
When you have the screen removed and power on the system the leds will turn on from bottom (1) to top (4)
@venkatesan1898
@venkatesan1898 4 года назад
Sir Plz! Help Me,I'm Using iMac Mid 2009 Model.... It Doesn't Power On Sometimes It Run Only Fan,
@kgerakopoulos
@kgerakopoulos 3 года назад
I have the same issue , black screen , no chime only fan
@cliftonrhodes7115
@cliftonrhodes7115 5 лет назад
I have a 2009 iMac do you know we’re the pram battery might be?
@antoniodave6780
@antoniodave6780 5 лет назад
you can find it at the back of motherboard
@heribertfranz5307
@heribertfranz5307 2 года назад
No led 2, what's the issue please?
@midolam677
@midolam677 6 лет назад
GOOD LUCK
@durianpc9690
@durianpc9690 3 года назад
Mine have that same problem. Slow booting up, sometimes not booting up at all.
@alidemorgoli2456
@alidemorgoli2456 Год назад
where can i find the battery i cant seem to find a seller
@99tekkerz
@99tekkerz 10 месяцев назад
My 2012 27” iMac does not start. I heard a noise like a capacitor blowing but after disabling everything I cannot find a single component that looks blown. I changed the power supply board anyway but it still does not start. No LED on the logic board are on. Thanks
@alexmalucobeleca5338
@alexmalucobeleca5338 8 месяцев назад
Tengo el mismo fallo
@keepsmile2505
@keepsmile2505 2 года назад
If LED 4 is red indicator iMac g5 what's problrem?
@hysejndermaku9143
@hysejndermaku9143 4 года назад
Hi there, recently i changed my hdd with ssd drive. Imac 21.5 late 2015 it starts and chimney sound is heard, all LED lights are on but LCD display shows vertical stripes in the middle. Could it be that LCD is broken or video card?. Hope to have an answer.
@zentaylmer1163
@zentaylmer1163 4 года назад
it obviously LCD Screen problem.
@jeanstp4522
@jeanstp4522 3 года назад
You may have damaged the LCD connector while removing the screen when you did the SSD upgrade. If you pull too much on the connector, it will disconnect from the pads.
@feninsamuel5530
@feninsamuel5530 3 года назад
2014 imac retina 5K display often turn off while working inside the OS with out any warning (for the past one and the half years i am facing this problem) and it wont turn on unless the UPS power button is switched off and turn back on and it will work for 15 - 20 minutes or even less than 5 minutes, some times it will work for more than one month and even it worked for six months with out any issues. but when the problem comes it will be continuous for some days. I contact Apple customer care they told to reset SMC, PRAM, check home electrical etc but the problem have not get solved. I even formatted the operating system three times and took it to Apple store they made some diagnosis test (almost it took one and the half hours to complete) and the test had not identified any problem. I noticed the problem will occur only when i am working inside the operating system it wont occur at the time of system formatting or when the system is in Internet recovery mode Recently i notice if i reset PRAM (CMD+Option+p+r) it will continue to work for some days with out any issue so i am having some doubt in the CMOS battery, If i replace the CMOS battery will the problem get solve or please give some suggestions to solve the issue. Thank you
@todortenkov527
@todortenkov527 2 года назад
My problem came after I tried to blow the ducts with compressed air. After that imac did not start. LED 1 did not light up when the cable was in the socket. I changed the power supply, after which led 1 lit up, and when I press the start button, led 2 flashed briefly, after which both went out.
@indigo2075
@indigo2075 Год назад
I have a similar issue the second led light blinking every 4 secs Did you find a solution Thanks in anticipation
@giantmehdi
@giantmehdi 2 года назад
I get led 1 on only. My pvram battery is good and has 3.1 volt on it. If I hold the on/off bottom the fan start working loudly, but still the led one is on. Some background information: I tried to install the ssd pcie hard drive, accidentally opened the cpu section as well and bent some pins , but took care of them. I checked your videos and assure that none of the use cases you mentioned happened. Would please help with how to find an issue?
@patrickdurees3025
@patrickdurees3025 2 года назад
3.1 volt indicates battery that is about flat should read over 3.3,best install a new battery and see if that cures it
@suchithpinreddy465
@suchithpinreddy465 4 года назад
Hello sir so I have an iMac 2011 27 in and it doesn’t chime but fan runs what might it caused to not to run and GPU and screen LED is off
@sabestianabraham8788
@sabestianabraham8788 3 года назад
Hi, Did you find a solution. becoz, i also have the same problem. Apple 109-c29557-00 iMac A1311 2011 AMD Radeon HD 6750 512mb Video Graphics Card
@suchithpinreddy465
@suchithpinreddy465 3 года назад
Yes I did graphics card bake after checking PRM battery and it work for me
@suchithpinreddy465
@suchithpinreddy465 3 года назад
But I don’t guarantee that it will work for everyone
@scottschneiderman4237
@scottschneiderman4237 5 лет назад
Suggestions on what to do if the battery holder becomes disconnected on one end. While trying to take the battery out the case disconnected.
@NorthridgeFix
@NorthridgeFix 5 лет назад
It needs to be soldered back on
@dutchman6533
@dutchman6533 3 года назад
i just tried that and it didnt work, only see two lights working when all is plugged in So you say my gpu is toast then and get new mother board?
@sinanpasa9564
@sinanpasa9564 Год назад
Hello Is the problem solved?
@boobizzy4173
@boobizzy4173 5 лет назад
Hey I have a 2009 iMac. When I push the power button, nothing comes on. When I unplug the back of the iMac, then plug it back in, I hear the iMac come on but no picture or chime sound. When I push the power button, I hear the iMac power off.Then when I push the power button, nothing comes on.It only comes on with no chime or picture when I unplug it from the back of the iMac and plug it back in. What do you think the problem is? Thanks!!!!
@venkatesan1898
@venkatesan1898 4 года назад
Same Problem For...Me But Here is No Sounds Only Fan running Sometimes
@venkatesan1898
@venkatesan1898 4 года назад
Can U Pls Help Me?
@sanjuthrindu1218
@sanjuthrindu1218 4 года назад
I cannot activate my Mac.plz help me
@khalily1461
@khalily1461 5 лет назад
Hey My iMac won't turn on (after a power outage that week), when I press the power button nothing happens. I removed the display and all the diagnostic LEDs are off. What does that mean? Is it the power supply/CMOS battery/mainboard?
@arminoyo187
@arminoyo187 5 лет назад
Khalil Y i have the same problem, have you solved the problem ?
@khalily1461
@khalily1461 5 лет назад
@@arminoyo187 Yes! I replaced the power supply and the iMac worked right away!
@arminoyo187
@arminoyo187 5 лет назад
Ok, thanks for your answer.. I will try that too. And hopes it works by me also Kind regards Arminoyo
@JujoeM
@JujoeM 3 года назад
I have 2008 imac, the 4th LED light is not turning on, the LCD is connected. Should i check the LCD inverter or the connection wires to the LCD? What do you think? I watch this video also (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EMihRCvTs9U.html) but the 4th LED is not opening so i think this is not for me
@aslerunarborgersen5175
@aslerunarborgersen5175 11 месяцев назад
I have an older Imac with similar problems, it starts up, the "wheel" turns for a while and then the machine turns off. I will try to replace the battery, but of course, it's an Apple product and everything is difficult. This battery should be easy to replace....but again, it's Apple and they want you to turn the computer in for a repair....
@WilliamJoseph2015
@WilliamJoseph2015 4 года назад
Where can I purchase a battery like that?
@zentaylmer1163
@zentaylmer1163 4 года назад
CR2032 Battery
@WilliamJoseph2015
@WilliamJoseph2015 4 года назад
@@zentaylmer1163 I got it. Never solves anything lol. Was the graphics card
@rogerramjetukuk
@rogerramjetukuk 2 года назад
I just bought an iMac 27 5k 2019. For £100 and its in a bad boot loop. It can find the hard drives / usb but just stops it self every time .. but I believe this is the issue will find out just search this in Google and it brought me here 👍👍 find out tomorrow after a trip to Poundland for a battery .. 😂
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