A1708 - SSD?

Anterweb

Member
So I had an a1708 you helped me work on a while back that was suffering from the flashing folder missing ssd problem,

I now have 2 a1708 macs here that have been repaired and are working fine except for the SSD drives, I have 2 original apple SSD drives
20220521_124934.jpg
One is a 2016 and the other is a 2017 ssd, and they are both behaving the same, as in if I have the charge cable connected to the macbook it will boot install os and work perfectly, if I remove the charger again they work perfectly until the battery goes below 30%. If I leave the mac on it will work until the battery runs out but if you try to restart the mac you get a flashing folder icon and the drive can't be seen at all until you charge the battery above 30%. As soon as the mac is above the 30% battery level or charger is reconnected it works perfectly,

This behaviour is the same with these ssd drives in 2 different macbooks so it's deffinatly the ssd at fault, question is have you seen anything like this before? Are these drives salvageable or do I bin them and find replacements?

Also thorght this info was useful to anyone trying to diagnose an a1708 whe flashing folder problem,
 

2informaticos

Administrator
Staff member
This kind of SSD module has an internal SMPS (switched mode power supply), connected to PPBUS_G3H.
When battery drops under 30%, PPBUS_G3H is also low and mentioned SMPS stops to work correctly.
It shouldn't happen, seems Apple didn't properly test their devices.
 
Hello guys,

I am having that exact same issue, what is the recommended solution? I saw that the 512gb version doesnt have this issue.
 
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