Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Imac replacement screen not working

Posted on 2016-09-06
7
Medium Priority
?
47 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 98

Accepted Solution

by:
John Hurst earned 1200 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 98

Assisted Solution

by:John Hurst
John Hurst earned 1200 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
Does Your Cloud Backup Use Blockchain Technology?

Blockchain technology has already revolutionized finance thanks to Bitcoin. Now it's disrupting other areas, including the realm of data protection. Learn how blockchain is now being used to authenticate backup files and keep them safe from hackers.

 
LVL 98

Expert Comment

by:John Hurst
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 800 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

Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

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…
This article outlines the struggles that Macs encounter in Windows-dominated workplace environments – and what Mac users can do to improve their network connectivity and remain productive.
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, Percona Solution Engineer Dimitri Vanoverbeke discusses why you want to use at least three nodes in a database cluster. To discuss how Percona Consulting can help with your design and architecture needs for your database and infras…

688 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