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still not seeing internal ssd

so it is not fully working but we are onto something

I can see the login screen but that is it

oh my god!!!! I heated the nand and it freaking worked!!!!!!

What do you mean heat? Reflow, or just warm them up? They all have that underfill crap around them.

Spent 30 min going through every voltage on that page, checked every capacitor, resistor and trace. Didn't see anything out of the ordinary.

SSD_PGOOD_L is 1.8V

PP3V3_SSD_NAND is 3.3V

nvm

PP3V3_SSD_NAND is 1.2v

Ok, Cover on J9600 is in place and the screws are tight and when I boot to external, disk utility does not see the internal SSD. Will have to figure out what SSD rails to check.

So I have an 820-00928 that is not recognizing the SSD. The customer states they were just working and it stopped working. The computer turns on but has a flashing ? folder. I took out the board and do not see any signs of corrosion or broken probe points. Any Ideas where to look?

LOL I use Amtech 559 bought from store.rossmann.com.

I used sweep function on UC, only cleaned for 2 min. I'll check for broken traces. I UC'd cause I couldn't get all of the flux out from under the SMC.

I used weep function on UC, only cleaned fpr 2 min. I'll check for broken traces. I UC'd cause I couldn't get all of the flux fout from under the SMC.

Thanks piernov, will try that.

Replaced SMC, got magsafe light and was working great, until I ultrasonic'd it. Now it is not posting...1

There is indeed continuity.

No, you said "center pin", wasn't sure what that meant. Still don't.

Sorry, though you were asking to check continuity from the center pin of Magsafe connector to u6990. Must not understand what your were asking for. Help me understand what removing D6950 does.