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Crucial MX300 - No SATA connection http://forum.hddguru.com/viewtopic.php?f=10&t=42258 |
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Author: | outbreak198x [ March 20th, 2022, 6:39 ] |
Post subject: | Crucial MX300 - No SATA connection |
Hello, need again your opinions i have this MX300 Crucial drive with 1050GB - it's not a BSY problem... it does not get SATA connection. it takes 0,27A on 5V - so that looks not so bad the question for me is now - is this problem of SATA controler? is the controler inside the Marvel Chip, because it looks like that? is the chip unique, or is it possible to swap, because i have some from 525GB drives. it looks like there is no short on the pcb, compared with values from 525GB drive it also looks fine. (for the parts i can measure) should i try to connect terminal, because found 525GB version article before mine for BSY problem - but i think there won't be any output anyone knows the safemode Pins? tried the classical ones, but nothing happens. Marvel Chip is getting warm. Attachment: Attachment:
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Author: | Lardman [ March 20th, 2022, 6:48 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
Have you been here yet? SS881074, https://blog.acelaboratory.com/pc-3000-ssd-sandisk-ultra-ii-and-wd-blue-marvell-cpu.html |
Author: | outbreak198x [ March 20th, 2022, 6:53 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
Lardman wrote: Have you been here yet? SS881074, https://blog.acelaboratory.com/pc-3000-ssd-sandisk-ultra-ii-and-wd-blue-marvell-cpu.html yes, but my drive does not get BSY and acelab told me, it's not possible, because crucial has his own Firmware on the controller. |
Author: | outbreak198x [ March 20th, 2022, 7:10 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
just touched the chips, and found out, that one diode is really getting warm instantly, don't know if it's normal, but i think it can burn your fingers, when you let it on... my IR ThermoMeter can't get the temperature - but i think it's around 60-70 degrees. Attachment: diode.png [ 174.72 KiB | Viewed 10530 times ] |
Author: | Lardman [ March 20th, 2022, 7:18 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
fzabkar has posted test points for these a few times - check your voltages but if the diode is getting that hot something is shorted. |
Author: | outbreak198x [ March 20th, 2022, 8:49 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
i'm a small step closer - on the BIOS ROM Chip is no voltage - maybe a LDO is broken - have to find out |
Author: | Lardman [ March 20th, 2022, 9:13 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
I have very few SSDs to play with and no Crucial MX's to give you known working reading from I'm afraid. |
Author: | outbreak198x [ March 20th, 2022, 10:06 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
Looks like the 2,8V missing on the whole board - checked the 525GB PCB - and there are 2,8V spread on the half pcb... not here on the faulty board |
Author: | outbreak198x [ March 20th, 2022, 10:21 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
and reffering to this - https://forum.hddguru.com/viewtopic.php?f=10&t=36242 i don't have those 2,75V on the NL Chip - there are 1,1V on it... |
Author: | fzabkar [ March 20th, 2022, 23:25 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
This is what I believe is happening: Code: 4 x 100 ohm ___ .-|___|-. TLV70028 .-------. | ___ | .----. | | enable 5Vin |-|___|-|5Vout |2.8V| | | pins of SATA o--+---+ ___ +---+----|LDO |--| MSP430|------> other | |-|___|-| | |reg | | | power | | ___ | | '----' | | regulators | '-|___|-' | '-------' | | "NL" | | | | | .-------. | | | | load | | | | |switch | | | '---|---/ --|---' | in | | out | '-------' | /|\ | | On/Off | '------------------------' Something is dragging down the input to the 2.8V LDO regulator ("NL"). The regulator is then only able to produce 1.1V rather than the full 2.8V supply required by the MSP430 uC. The uC never wakes up, and is then not able to turn on all the other regulator ICs. I expect that 5Vout will measure around 1.5V or less. Try to find what else is connected to this point. If you are willing, you can short 5Vin to 5Vout and see which component gets hot. However it would be better to simply test the resistances. Look for something around 150 ohms. Maybe the diode is the clue. |
Author: | fzabkar [ March 21st, 2022, 1:07 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
fzabkar wrote: Look for something around 150 ohms. Sorry, I meant 150mA or 10 ohms. |
Author: | outbreak198x [ March 21st, 2022, 5:28 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
Hello, and thx for this great inputs but 5Vout = 4,95V also on the back side the 0-Ohm Resistors have around 5V in out but what looks strange to me is, that the LDO has nearly 5V on all pins - i don't think it should be like that? Attachment:
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Author: | outbreak198x [ March 21st, 2022, 5:39 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
and on the Load Switch is 0V |
Author: | fzabkar [ March 21st, 2022, 9:31 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
The load switch which I have identified appears to be a load switch for the other supplies. It must be used in standby mode. The SOT23 part you have identified (MP3) is a P-channel power MOSFET which appears to be acting as the load switch for 5Vout. I believe that the 6-pin part marked "NL" (near the flash controller) is the LDO that powers the MSP430. It should be outputting 2.8V. Its input should be 5Vout. If the input is 5V, then either this LDO is faulty, or the MSP430 is dragging the voltage down, in which case the uC is faulty. TLV70028, Texas Instruments, marking NL, 2.8V, 200mA, Low IQ, LDO Regulator, WSON, 6-pin: http://www.ti.com/lit/ds/symlink/tlv700.pdf |
Author: | fzabkar [ March 21st, 2022, 9:51 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
My bet is that "NL" is faulty, otherwise any large current draw by MSP430 would have appeared as a voltage drop across the 100 ohm resistors. I'm thinking that you could remove "NL" and inject 3.3V into the Vout pad, or 2.8V if you have a lab PSU. However, first confirm that the Vout pin does in fact connect to the Vcc pin(s) of the MSP430. Also measure the resistance to ground at Vout of "NL" to confirm that there is no overload. Did you check whether the diode is connected between 5Vin and ground, or 5Vout and ground? |
Author: | fzabkar [ March 21st, 2022, 10:08 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
BTW, the reason that 5Vout measures 5V is not because the load switch ("MP3") is turned on (it is off, Vgs = -0.2V). Instead it is because the MSP430 is not drawing any current, so the voltage drop across the 100 ohm resistors is zero. I think ... |
Author: | outbreak198x [ March 21st, 2022, 10:18 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
i love so much input i'll just change the NL with a new one - i have 1,8V in actually, and 1,2V on the faulty board now - so i think the fault is behind it - maybe really the uC is dead... but anyway it's changed fast |
Author: | fzabkar [ March 21st, 2022, 10:20 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
So where is the 1.8V coming from? Something is wrong with my analysis ... "NL" needs at least 3V to produce a 2.8V output. Measure the Vcc pin of the MSP430. I'm not sure that "NL" is the source of this supply. |
Author: | outbreak198x [ March 21st, 2022, 10:39 ] |
Post subject: | Re: Crucial MX300 - No SATA connection |
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 Attachment: resistor.png [ 172.92 KiB | Viewed 10030 times ] maybe this should be just a 0-Ohm Resistor? should i try to short it - i'm so shy |
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