A1707 820-00281 question mark folder

arnonabuurs

New member
Hi, I have a A1707 820-00281 with the infamous question mark folder. I saw a video of the 1706 witch has a failing probe point in many cases. Any know issues for this A1707 15 inch touchbar with regards to SSD drives failing?
 

arnonabuurs

New member
Yes connected. No short on all SSD powerlines. I get 3.3v and 1.8v but both then drop to 0v One capacitor looks like its a bit corroded, measures still OK though no short on that one. Its C9390 pin 1 thats a bit corroded.
 

2informaticos

Administrator
Staff member
If SSD voltages drop, is the reason of question mark folder.
All SSD voltages must come and stay on.
 

arnonabuurs

New member
So i reassembled the machine, running on battery power. I have all voltages 12v, 1.8v and 3.3v should there be something else?
 

arnonabuurs

New member
Found a short, now I have following issue. The board is an 820-00928-A and I have the boardview and schematics for 820-00928, doesnt say A. Mostly looks identical but the area where I found the short is slightly different, see attached image from my boardview as well as the board in question. Is there different versions of this board?

PS sorry i wrote the model wrong in the tittle
 

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2informaticos

Administrator
Staff member
Be sure to have schematic and boardview for Baffin2,
Baffin (X363G) is 00281.

Where did you find the short?
 

arnonabuurs

New member
Attached pics. I have the 00281 will check
 

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arnonabuurs

New member
I can't find as my schematics don't match even the 281 is different.... See attached
 

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2informaticos

Administrator
Staff member
Check against Baffin then, see if better.
Why did you spend money for schematic, instead of asking here???
 

arnonabuurs

New member
Just to make it clear, I have schematics for Baffin and Baffin2. The corresponsing boardviews that came with these are identical, just named different 281 and 928. Maybe its just the wrong boardview that was included and the scematics is OK.
 

2informaticos

Administrator
Staff member
That shorted power rail should go to some connector, or another easy component to locate on boardview...
 
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