Crucial MX300 - No SATA connection

[outbreak198x]

Yep - Vcc from MSP is connected to Out of NL

[outbreak198x]

Changed MSP430 - and what should i say - i'm IN

Thx for everything

[fzabkar]

in any case, NL is not dead :D - working on donorpcb

it's not easy to find out, because both sides...

i think i know where the 1,8V came from

resistor.png

maybe this should be just a 0-Ohm Resistor? should i try to short it :D - i'm so shy

No, don't short it yet. You still haven't told us where the diode is connected. Is there a marking code on it? Where is the 4.4V coming from?

Measure the resistance of the resistor on your patient and donor.

[outbreak198x]

in any case, NL is not dead - working on donorpcb

it's not easy to find out, because both sides...

i think i know where the 1,8V came from

resistor.png

maybe this should be just a 0-Ohm Resistor? should i try to short it - i'm so shy

No, don't short it yet. You still haven't told us where the diode is connected. Is there a marking code on it? Where is the 4.4V coming from?

Measure the resistance of the resistor on your patient and donor.

Finally it already works
but i can check when cloned if you want

[fzabkar]

Changed MSP430 - and what should i say - i'm IN ;)

That must mean that the "NL" LDO must getting its power from 5Vin rather than 5Vout. I wonder if the heating that you sensed was actually coming from the resistor rather than the diode. On another Crucial SSD there was a 10 ohm resistor in series with the supply to the MSP430.

Here is another soft start thread:

https://forum.hddguru.com/viewtopic.php?f=10&t=33908&p=269986#p269986

Last edited by fzabkar on March 21st, 2022, 12:28, edited 2 times in total.

[outbreak198x]

Changed MSP430 - and what should i say - i'm IN

That must mean that the "NL" LDO must getting its power from 5Vin rather than 5Vout. I wonder if the heating that you sensed was actually coming from the resistor rather than the diode. On another Crucial SSD, there was a 10 ohm resistor in series with the supply to the MSP430.

it's a 10 Ohm restistor, and yes, i think that's what was hot - but my FLIR cam is on the way, so in future, i can send you thermal pics

[gold6565]

Read the ROM on the programmer and put it here, there may be problems with it.

[outbreak198x]

Read the ROM on the programmer and put it here, there may be problems with it.

no - i already changed ROM before

but as written, Problem is solved by changing MSP Chip

[gold6565]

The ROM is unique, for each SSD, it cannot be changed, and it has a block that is responsible for the MSP

[outbreak198x]

The ROM is unique, for each SSD, it cannot be changed, and it has a block that is responsible for the MSP

i know that it is unique, it was just a Test to find out if the ROM Chip was faulty.

but as told - i already have all the data

[outbreak198x]

FLIR arrived

have to play around with it, but first images shows me, that i'm not that bad at guessing temperatures

[Lardman]

Not sure what your calibration is like, but flip the pcb over and check it again.