2014 MBP doesn’t start

[macitech]

2014 MacBook Pro 13 inch need to find out where the jumpers are at on the logic board to see if it will start .
doesn’t start from the keyboard .
A1502 emc 2875
Thanks

 

[TCRScircuit]

Board number?

 

[macitech]

2014 MacBook Pro 13 820-3536

 

[iambehr]

Buy the schematic and board view for $20. You'll thank yourself later on.

 

[macitech]

I own it! That wasn't my question

 

[larossmann]

These automatically turn on whenever you plug the charger in. SMC_ONOFF_L is the signal you short to ground to turn it on, but it will turn itself on when the charger is plugged in.

 

[macitech]

Thanks Louis.
Charging is working so I’ll check the pv3 hot?
I’ll check you videos

 

[macitech]

No Liquid spill that I can see I’ll pull the board.

 

[gcain]

You need to measure some power rails to see where the issue is. We have nothing to go on until you do.

SMC_ONOFF_L turns it on, so look for that. But it should auto boot or there is an issue anyway.

Test with a known good charged battery too and make sure you're using a genuine 85w charger.

 

[macitech]

Thanks I’ll check the power rails

 

[iambehr]

The power on pads are on the top and bottom of the board at R5115 and R5116 (those components not populated). You should have 3.4ish volts on the SMC_ONOFF_L line.
Like previously stated, if you disconnect the battery and plug in an 85 watt charger the board should come on automatically. A 60 watt will not be enough.
I have seen a bad keyboard keep a logic board from booting, so try with and without.

 

[dukefawks]

A 60W is fine for 13" machines. Green/orange light present? PPBUS voltage?