Hello,
sorry about my poor english, I'm French!
Soso, I need help on an iMac 21,5" late 2012 (EMC 2544).
I open it to change the faulty hard-drive by a SSD.
After installing the system end before stuck the screen back,
I just switch off and restart to check if everything start fine.
The SSD has disappeared!
A little bit too quicky, I just reopened it to check what's wrong.
The SSD was faulty!
I replaced it and everything works fine, except the display which remains totally black (not a backlight issue).
After different tests, I found that there's a failed pin on the display LVD plug.
So here's my question:
what can I check on the logic board?
I plug my faulty LVD on another iMac (Late 2013) who works previously fine, the this iMac got the same symptom (no more internal display, independently of which LVD I plug)
Actually, I got signal only on external display.
When I plug the AC cord the iMac the fans go immediately full and slow down after start.
Next everything works fine, except I didn't have any signal on the internal dispaly.
On the late 2013 iMac, if I run Apple Hardware Test, I obtain these errors:
SMC = PFM006 / Display = VFD001
Thank you for your help!
Sincerely,
Julien Favier
sorry about my poor english, I'm French!
Soso, I need help on an iMac 21,5" late 2012 (EMC 2544).
I open it to change the faulty hard-drive by a SSD.
After installing the system end before stuck the screen back,
I just switch off and restart to check if everything start fine.
The SSD has disappeared!
A little bit too quicky, I just reopened it to check what's wrong.
The SSD was faulty!
I replaced it and everything works fine, except the display which remains totally black (not a backlight issue).
After different tests, I found that there's a failed pin on the display LVD plug.
So here's my question:
what can I check on the logic board?
I plug my faulty LVD on another iMac (Late 2013) who works previously fine, the this iMac got the same symptom (no more internal display, independently of which LVD I plug)
Actually, I got signal only on external display.
When I plug the AC cord the iMac the fans go immediately full and slow down after start.
Next everything works fine, except I didn't have any signal on the internal dispaly.
On the late 2013 iMac, if I run Apple Hardware Test, I obtain these errors:
SMC = PFM006 / Display = VFD001
Thank you for your help!
Sincerely,
Julien Favier