Mid 2010 iMac 27" Chime Black Screen
I have mid 2010 iMAC 27 inch purchased 2011. It was working fine until a couple of months ago. Now, the issue is, the chime boot up sound loops and no screen display. I have removed the screen and tried to verify the Hard drive.
I bought a SATA cable from best buy and tried connecting the hard drive to mac book laptop using SATA cable.
The hard drive didnt show up in the Macbook Pro. I thought hard drive is the problem. so I bought another hard drive but even that didn't seem to be recognized with the SATA cable.
Not sure how to connect the internal hard drives to the macbook pro.
1) What component could have failed to load the iMAC Screen if it is not hard drive issue?
2) Should I try replacing logic board or graphics card or cpu?
3) What is the best way to trouble shoot connecting internal hard drive to macbook pro?
Hi, thanks for the help to start with diagnostic LEDs. But I cant seems to find the LEDs.
I checked this manual and at page 29. I cant find the LEDs please help.