A1707 Does Not Wake Up After Lid Closed

[MeTech Turkey]

Hello again to everyone,

Its me again As you may remember I had a problem with fans and slow working with this computer and it was totally trackpad. I found out that I ve knocked out the sensor of trackpad. But now I have realised that computer does not wake up after lid closed and opened. It stays on black screen. The computert keeps working and I realised that my power button also does not work after I open the lid to shut down the computer. Any idea where it can happen from?

 

[2informaticos]

This should be caused by one Hall sensor.
Check SMC_LID_LEFT/RIGHT levels.

 

[MeTech Turkey]

Hello yeah I think I found the problem. This just came off from the top of left hall sensor. I think this is the problem but I dont know if I can find this from anywhere else.

Resim Yükle, Hızlı Resim Paylaş - resimyukle.io

Resim yükle ile paylaşmak istediğiniz tüm resimleri yükleyin ve arkadaşlarınızla paylaşın. - resimyukle.io

resimyukle.io

 

[2informaticos]

That is small package Hall sensor; probably SOT-323, or even smaller.
You can find a replacement from any A1706/7/8 board.

Some boards have the sensor glued; need patience to remove it.

 

[2informaticos]

Check this:

MRMS205A pdf, MRMS205A Description, MRMS205A Datasheet, MRMS205A view ::: ALLDATASHEET :::

MRMS205A Datasheet, MRMS205A datasheets, MRMS205A pdf, MRMS205A integrated circuits : MURATA - AMR Sensors (Magnetic Switches) ,alldatasheet, Datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs and other semiconductors.

pdf1.alldatasheet.com

Your should be Mini 3Pin FLP package.

 

[MeTech Turkey]

This is perfect I can check the boards I have if they have any of these.

 

[2informaticos]

I think I saw W73 (MRSS32W) on A1708.

W55/71/73/86 is the same...

HALL IC MRSS32W SOT-323 marking W55/W71/W73/W86|Welcome to Eric Online Store - Shenzhen ERIC Electronics Co., Ltd.

Eric Online Store is the Shenzhen ERIC Electronics Co., Ltd.'s official online store.

www.eric1688.com

 

[MeTech Turkey]

You are a star thank you. Will keep checking tomorrow when Im back at the shop. And thank you for this website too. I never seen it before

 

[MeTech Turkey]

I have checked and emailed to eric1688.com but they dont have. Tried Ali express but not sure which one is the right one over there? Any chance to help me about finding the right ic?

 

[MeTech Turkey]

This should be caused by one Hall sensor.
Check SMC_LID_LEFT/RIGHT levels.

Can I ask how should I check these levels? Sorry Im really new to all these macbooks

 

[MeTech Turkey]

Hi Again,

When I checked the second leg of J5260 on A1707 on diode mode, it gives me around 0.505 but when I checked the one on J5250 2nd leg it gives me 2,860 so I dont know which one is the right one and working well ) Can you help me about diode measurements so I can check them later again.

 

[2informaticos]

About diode mode checking (and mode), read this:

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

I was expecting you to check voltage of mentioned signals.

You can tie together pins 1 & 2 of U5255.
And let disconnected the bad Hall sensor.
One lid sensor should be sufficient...

 

[MeTech Turkey]

Ohh I am sorry I didnt know that I had to check voltages. Im sorry as I said Im new to these business and trying to update myself about everything always.
So could you please clear me with telling how to tie 1&2 pins and how to disconnect the bad hall sensor?
Can you please tell me a bit more explained?
Thank you for your patience.

 

[2informaticos]

Pufff, U5255 is small BGA.
Try to run an wire from [1]SMC_LID_LEFT_R (pin 1/R5258) to TP[1]SMC_LID_RIGHT test point; find them on boardview.
One sensor should do the job.

 

[MeTech Turkey]

Thank you for your patience Okay will do and let you about it