820-00431-a imac 21 late 2014

bno

New member
hello everybody,
i got this logic board. it doesn't turn on. i've tested the power supply and it works, Can someone please provide me the schematic and the board view, because i founded a short on 5v.

thank you

biagio
 

aprendiz

Moderator
Usually the short is on USB section, seems no schematic available, also here is not the place to ask for such material (schematic and boardview), use google.....
 

2informaticos

Administrator
Staff member
Schematic not available, nor boardview.
You must compare with other iMac schemtics which use the same chips.
Post exact value of the short; ohm scale to ground.
Do you have short on 5V coil, or beyond a Power MOSFET?
You may inject voltage there, depending of the short value...
 
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