(347) 552-2258 [email protected]

820-3437 turning on @.650A then turns off

2click

2click

Member
Hi, this board is pretty clean, just a little bit of corrosion in some pads, F7140 was broken, checked for a short on both Pins, but there is no short to ground.i Replaced the fuse and the board is turning to .600A but it goes back to stand by, it does it 3 times. the 3rd time it goes down to .450A is that normal behavior?
 
2click

2click

Member
No, on the third restart, the backlight goes on for a second (I saw that on the monitor apple) then it turns off... the computer does nothing...
 
2informaticos

2informaticos

Administrator
Staff member
Board remains with 450mA, is what you've said.
So should stays on, but no activity.
Please explain correct the symptom.
Make the difference, ON board is not the same as working board.
Did you test USB activity?
 
2click

2click

Member
Hi, so I justs got back to this board, tried starting it in normal and SMC bypass mode, it turns on on both modes and does get to the point where the backlight is working, but I never get the flashing folder image (I am not using SSD). So it is turning on, but it is not working properly. What can be checked at this point? What chip does store the flashing folder information? Is it the EEFI? Could I asume that there is a problem with the BIOS because of this happening? Thanks 2 informaticos!
 
You must log in or register to reply here.
Top