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 Post subject: SanDisk Ultra 2 Controller problem?
PostPosted: February 15th, 2024, 6:26 
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Hello guys!

I have a SanDisk Ultra 2. At first iit was possible to get it ready via short on PC3K but after some minutes it stoped.
I lloked via termal cam and saw that the controller is getting some temperature... like 38C.. not so special.

But i dont know whats the problem... could anyone help me or give me some advice?

Thank you!

Greetings,
Ihab.


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 15th, 2024, 7:42 
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If it used to come ready and after a delay and now doesn't it would point towards firmware problems from degraded nand. Supported in pc3K ssd.

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 21st, 2024, 3:37 
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Lardman, hello, sadly it doesnt come ready... even after short..


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 21st, 2024, 5:07 
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Is it going into safe mode?

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 21st, 2024, 10:06 
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Lardman, not anymore.


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 21st, 2024, 11:01 
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If you're not getting anything from the controller check the power rails to ensure it is being powered correctly. I don't have a pcb to check for you I've looked. Also check the power consumption pattern and usage. I've not seen a dead controller on these - perhaps others have?

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 21st, 2024, 12:25 
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Lardman, okey, i will check it. Thank you very much.


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 21st, 2024, 12:51 
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What are the voltages at L1, L2, L3, L4?

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 4:05 
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fzabkar, Hello,

L1 seams to get nothing
L2 also seams to get nothing
L3 around 1.8
L4 around 0.7

but not 100% sure on L1 and L2 to be honest...


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 4:20 
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It would be unusual to have two step-down converters fail at the same time. Are you measuring the voltage between the inductor and ground?

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 4:25 
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fzabkar, I was measuring on each side from the inductors.
Do you think it would be worth to change them?


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 4:31 
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Work the rail backwards until you find some voltage, the inductors don't produce it.

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 4:55 
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Lardman, fzabkar, I don't know why, but the SSD ist not taking anything now....
Not sure what i can do to be honest...


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 5:38 
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Ihab wrote:
Lardman, fzabkar, I don't know why, but the SSD ist not taking anything now....
Not sure what i can do to be honest...
Start at the 5v input at the sata connector and work forwards then - this is basic troubleshooting and certainly not something your should be learning to do on a clients drive. Buy/get an identical donor drive and work with it until you understand how power is delivered to the major ICs.

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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 5:41 
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Lardman, Thats a good Advise! Thank you, i will do it like that.

And i was just checking it, didnt worked on it jet.


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 Post subject: Re: SanDisk Ultra 2 Controller problem?
PostPosted: February 22nd, 2024, 8:30 
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Lardman, Ihab, It was a problem with the PC3K... SSD has still the same problem :?


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