1 iMac 21.5, Late 2009, does not power on any more
Hi.
I have iMac 21.5, Late 2009. It worked just fine till last week, when I turned it off (system shut down) and disconnected the power cable before going to vacation.
After a week I wanted to power on the iMac (with power cable switched), but nothing happens.
I tried the the "trick" with resetting the SMC, and still nothing.
Checked the diagnostic leds:
- Diagnostic Led #1 is ON
- Diagnostic Led #2 is OFF after "Power On" button pressed
- Logic Board Test Point: Pin 1 and Pin 4 has 12V
- Logic Board Test Point: Pin 1 and Pin 12 has around 2,5V (always)
Does anybody know what could be suddenly wrong?
Kind regards,
Mitja
I went to the repair service.
Looks like the logic board is broken.
They tried the logic board from iMac 21.5 2010 (a year newer model). But the graphics apeared to work wired. When turning computer on the graphic appeared on screen, lets say, cca after a couple of minutes. And not right away as it should.
Does someone know if this combination should work? Or is my qraphic card (Radeon) also broken.
Regards,
Mitja
由 Mitja Masten 完成的