iMac A1224 dead. Even after PSU swap
Good morning to everyone!
I've a lot of problem with my old iMac. I've changed the CPU (with a Penryn unit) and I've worked with it for some months now with no problems.
A few days ago, the iMac doesn't want to turn on, and nothing happens when I push the power button, no fan, no display... Nothing.
I thought the PSU was bad, and I've changed the PSU out, but nothing happens....
Any ideas or checks that I can do?
Do you think that if the CPU was broken the iMac wouldn't start at all?
Thank you for the support!
I've done some test:
- Removed the mainboard: on both sides there are no evidence of damage
- I've changed 2 different CPU's
- I've removed hdd, dvd, bluetooth, wifi
- I've changed 2 different PSU
- Every test without display connected
Every time the same results.
When I plug the power cord the first LED will start, pushing the power on button the first 3 LEDs will blink, and they shutdown.
Anyone can see the video?
I've tried to change:
but always the same results on 2 different mainboard with 2 different cpu
it seems that the psu is the cause again...or there are other options :( :( :(
thank you for your suggestion
I've opened the imac, I see the 1st led turned on.
when I push the power on, the first 3 led blink for just some millisecond, and after, every led shout down.
only if i remove the power chord for some minutes the first led will turn on.
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