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820-00597 Boot with apple logo freeze

R

raainxx

Member
Hi,
i have this board with logo apple and chime but no more things.
I haven't led on mouse connect on usb.
I have PP5_S4_SRC = 5V.
All diagnostic led are on.
I can't reinstall system or test the Mac.
Do you have an idea?
thanks
 
2informaticos

2informaticos

Administrator
Staff member
It is stuck on Apple logo, no progress bar?
Did you try safe mode and SMC bypass?
Can you access boot menu and embedded diagnostic?
 
R

raainxx

Member
no bar progress. no keyboard I can't safe mode, I can reinstall.
what is SMC BYPASS on iMac?
I can't access boot menu because I haven't access keyboard (mouse not blinking).
thans
 
2informaticos

2informaticos

Administrator
Staff member
Did you test disconnecting J6600?

HOW TO collection

I hope this "How to" collection will help our members. I will possibly modify this post in time, if updates available. Trigger SMC_ONOFF_L (PMU_ONOFF_L): It reffers to simulate power button function, when the keyboard is not connected. We need to do this when we work with the board...
boards.rossmanngroup.com boards.rossmanngroup.com
 
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