PM851 - no BSY state no access... nothing

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c.vogl@solution.at
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PM851 - no BSY state no access... nothing

Postby c.vogl@solution.at » 12.01.19, 17:42

Hello,

i got this drive (PM851 - with 840 Controller) to recover, but there is no BSY state, and i can't get to Safe Mode - all chips are getting warm, not hot, just normal temperature.
Any idea what else i can try to get in safe mode?

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Roman_TS
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Re: PM851 - no BSY state no access... nothing

Postby Roman_TS » 13.01.19, 11:22

Can you show us SAFEMODE pins that you are trying to short?
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Re: PM851 - no BSY state no access... nothing

Postby c.vogl@solution.at » 13.01.19, 16:00

Sure :) attachment added
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Roman_TS
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Re: PM851 - no BSY state no access... nothing

Postby Roman_TS » 13.01.19, 19:40

My recommendation - try to solder something between this two points. Wire, or soldering tin.
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Re: PM851 - no BSY state no access... nothing

Postby c.vogl@solution.at » 13.01.19, 19:48

i already soldered the terminal PINs - and he also wrote me terminal access OK - so i'll try tomorrow with those 2 pins too, but i think it will not help - we will see :)


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Re: PM851 - no BSY state no access... nothing

Postby c.vogl@solution.at » 14.01.19, 13:10

Hello again, as expected no reaction with soldered Safemode Pins - because there was no BSY State too before.

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Roman_TS
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Re: PM851 - no BSY state no access... nothing

Postby Roman_TS » Yesterday, 09:41

Then, most probably your drive has an issue with power supply or with CPU. Sometimes due the voltage jumps, CPU might become burned. In this case the only way to get the data - swap the NAND chips to donor SSD.
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c.vogl@solution.at
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Re: PM851 - no BSY state no access... nothing

Postby c.vogl@solution.at » Yesterday, 16:34

OK, 12V and 5V displays everything green.... i'll try to swap or first try to check voltages and/or rehot.


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