Solved

Imac replacement screen not working

Posted on 2016-09-06
7
36 Views
Last Modified: 2016-09-28
Guys,

I have an Imac that appeared to have a bad screen. I changed out the screen and still no video. I can plug an external monitor up to the thunderbolt port and get video on an external monitor fine. Any suggestions?
0
Comment
Question by:mikesmithccs
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
7 Comments
 
LVL 96

Accepted Solution

by:
Experienced Member earned 300 total points (awarded by participants)
ID: 41786856
Is it LCD or LED?  Assuming LCD (I am not sure why):

Screen (you just replaced)
Inverter (to run the screen)
Cold cathode tube (to light the screen)
Interconnections to all these.

Not likely the GPU as the external monitor would not light in that case.
0
 
LVL 1

Author Comment

by:mikesmithccs
ID: 41786864
It is a late model IMac with 27 inch 4k retina display. Not sure about whether LCD or LED, I would also assume LCD. Everything is connected and appears to be seated well. The screen never lights up or shows any backlight. However, an external monitor works just fine. Im wondering if one of the connections on the board has failed.
0
 
LVL 96

Assisted Solution

by:Experienced Member
Experienced Member earned 300 total points (awarded by participants)
ID: 41786869
I would suspect the Inverter, Cold Cathode tube if LCD.

If LED, I agree it could be a connection on the board (say where the video cable sits)
0
Simple, centralized multimedia control

Watch and learn to see how ATEN provided an easy and effective way for three jointly-owned pubs to control the 60 televisions located across their three venues utilizing the ATEN Control System, Modular Matrix Switch and HDBaseT extenders.

 
LVL 96

Expert Comment

by:Experienced Member
ID: 41786904
Also, I am assuming "screen" meant the glass piece. If you replaced the entire unit, that would include the parts I mentioned. Sorry for my own confusion

So yes, look at the connection points on the mainboard.
0
 
LVL 1

Assisted Solution

by:Mre Martin
Mre Martin earned 200 total points (awarded by participants)
ID: 41787620
if it is Inverter anyway there will be video on screen just very very dim.
0
 
LVL 1

Author Comment

by:mikesmithccs
ID: 41791317
At this time I have sent the "replacement" screen back, as I believe it may also be bad. Going to try another and see how it goes.
0

Featured Post

Back Up Your Microsoft Windows Server®

Back up all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Today, still in the boom of Apple, PC's and products, nearly 50% of the computer users use Windows as graphical operating systems. If you are among those users who love windows, but are grappling to keep the system's hard drive optimized, then you s…
I was prompted to write this article after the recent World-Wide Ransomware outbreak. For years now, System Administrators around the world have used the excuse of "Waiting a Bit" before applying Security Patch Updates. This type of reasoning to me …
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…

627 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question