Hi, am new to the forum, I am a Microsoft Certified Technology Specialist, Systems Engineer and plan to take my ACMT exams in the not too distant future.
I have a most infuriating and confusing problem with my mac mini A1283, (2009 @ 2.23GHz).
Basically when I insert the power cable into this, the fan comes on full blast, (of it's own accord) and I get no display.
I have no response from the power button either.
Please bear in mind that the fans etc start as soon as charger is connected with no press of the power button. The only way to turn this off is to remove the charger.
To reiterate, the fans start of their own accord as soon as charger is inserted, (no power button presses whatsoever).
What I have tried:
1)Reseated RAM
2)Reset PRAM
3)Reset SMC
4)Removed internal battery to reset logic board
5)Disconnected power button and shorted the pins, (no response)
6)Reflowed the GPU as believe this model may be prone to GPU issues
7)Reflowed processor as maybe CPU/GPU suffering heat related stress fractures in BGA solder.
All the above have made zero difference whatsoever to this.
I hate to admit defeat, (or don't want to admit I need a new logic board).
But if anyone out there has any ideas or suggestions I would really appreciate some help.
I am pretty handy with a soldering iron and am competent to repair the board down to component level.
Wondering if this issue is symptomatic with a specific component failure on the logic board???
PLEASE HELP
Stan
I have a most infuriating and confusing problem with my mac mini A1283, (2009 @ 2.23GHz).
Basically when I insert the power cable into this, the fan comes on full blast, (of it's own accord) and I get no display.
I have no response from the power button either.
Please bear in mind that the fans etc start as soon as charger is connected with no press of the power button. The only way to turn this off is to remove the charger.
To reiterate, the fans start of their own accord as soon as charger is inserted, (no power button presses whatsoever).
What I have tried:
1)Reseated RAM
2)Reset PRAM
3)Reset SMC
4)Removed internal battery to reset logic board
5)Disconnected power button and shorted the pins, (no response)
6)Reflowed the GPU as believe this model may be prone to GPU issues
7)Reflowed processor as maybe CPU/GPU suffering heat related stress fractures in BGA solder.
All the above have made zero difference whatsoever to this.
I hate to admit defeat, (or don't want to admit I need a new logic board).
But if anyone out there has any ideas or suggestions I would really appreciate some help.
I am pretty handy with a soldering iron and am competent to repair the board down to component level.
Wondering if this issue is symptomatic with a specific component failure on the logic board???
PLEASE HELP
Stan