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Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 14th, 2025, 14:04
by Jacksoft
Hi all, I have an SP A55 SSD with MAS1102B-B1C controller and two SYMN0WQC1B1DC4C NANDs where I need to recover data.
The disk is formatted in HFS+ and I need to use R-Studio to extract data since I'm on Windows.
Initially the disk was recognized, but after some little time (~10-20sec), now most of the time isn't recognized anymore or rarely after a long led blinking.
I tried to replace the crystal (hoped it was dropped and it caused the issue) but nothing.
I taken a picture of the board and drawed all the voltages on it. They all looks good except one (feedback or dataline(?)) or two. Also I connected it to a serial port and extracted the entire log where I ca see many warning and or fail.

I don't have PC3000 so I would ask if someone could suggest anything that could be helpful.

Thanks.

Re: Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 15th, 2025, 6:26
by michael chiklis
Sarà molto probabilmente un problema di blocchi danneggiati, serve PC3000 per generare i translator virtuali in modo da poter recuperare i dati.
Attualmente però PC3000 NON SUPPORTA il tuo specifico modello di ssd, ma ci stanno lavorando...

https://blog.acelab.eu.com/pc-3000-ssd- ... #more-1378
maxio.jpg


quindi è inutile che ti rivolgi ad una ditta di recupero dati finchè non uscirà l'aggiornamento che supporterà a pieno quel tipo di controller.
Dovrai attendere, non c'è altro modo.

Re: Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 16th, 2025, 15:56
by Jacksoft
Uhm, quindi i blocchi danneggiati (che immagino si stiano allargando a macchia d'olio) fanno in modo che il disco non venga nemmeno riconosciuto come unità di archiviazione di massa? Che s'è così è un bel problema... Io pensavo fosse più il controller morente (che però risponde bene in UART quindi ho immaginato non fosse lui), ma magari qualche tensioncina non sufficiente... Argh (la cosa bella è che lo SMART dava ancora 100% quando ancora veniva riconosciuto, bella schifezza, lol!)

Beh s'è così allora rinuncio... Grazie mille.

Re: Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 16th, 2025, 16:15
by fzabkar
Pin #6 of CDEA is the feedback pin. My searches tell me that it should be 0.6V when regulating properly.

Re: Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 17th, 2025, 6:59
by Jacksoft
fzabkar wrote:Pin #6 of CDEA is the feedback pin. My searches tell me that it should be 0.6V when regulating properly.


Is there any datasheet or example schematic? However there's a stable voltage on the output coil...

Re: Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 18th, 2025, 19:09
by fzabkar
If the feedback voltage is 0.6V, then the output voltage must be correct.

HX3430, Hxk Technology, Synchronous Step-Down Converter, 1.1 MHz, 3A, 2.5V - 6.0Vin, marking CDCO, DFN2X2-6:
https://hxkic.com/data/product/20201210_164711_71005.pdf

Re: Help with SP A55 SSD (MAS1102B-B1C)

Posted: August 18th, 2025, 21:43
by fzabkar
Sorry, wrong IC.