820-3787 fan speed and no camera

[thomamagic]

Hello,
I have an 820-3787 motherboard with the following problem
The customer by dismantling damaged the J4002 slot for the camera
I resoldered everything but the machine starts with full speed fan. When opening the camera the system tells me that the machine needs to cool down and displays nothing.
A track? THANKS

 

[2informaticos]

ALS works?
Still fast fan disconnecting camera?

Start in diagnostic mode and see which error pops up.

 

[thomamagic]

sorry but what is ALS?
Yes when disconnecting camera same probleme
in diagnostic mode i have problem with SMC
(error PFM006 - NDC001 - PPN001)

 

[2informaticos]

Ambient Light Sensor, embedded into camera module.
Check diode mode to ground on ALS_SCL/SDA lines; compare with good board.

Try known good trackpad board/flex also.

 

[thomamagic]

i have replace trackapad board/flex, replace keyboard and same problem check pictures

 

[thomamagic]

ALS_SCL/SDA lines on J4002 pin 8 and 9 corresponding to I2C_ALS_SDA and I2C_ALS_SCL
i have 0.760 on this board and with good board 0.725 in diode mode to ground

 

[2informaticos]

Are you using original 85W Magsafe 2 charger?
Also test with know good battery; not chinese new!

 

[thomamagic]

on picture no, only on battery
i have put charger 85w original and put original battery and same problem

 

[2informaticos]

Did you test with another camera?
Do you get 5V at J4002 pin 12?

 

[thomamagic]

Yes, i have 5v on pin 12 yes

I have put new mainboard all works, camera is good, battery, trackpad and mouse

The problem is really on mainboard

 

[2informaticos]

If nothing else than camera connected was damaged, the problem must be there.
Check if you rebuild all traces correctly.