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 Post subject: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 18th, 2018, 4:53 
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The SSd does not show any signals (BSY DRD etc) - even not blinking for a while - nothing of nothing.

on coil 2R2 i misured 2,8 volt
on coil 1R2 0,0 volt

i suspect a spike killed the fuse diode but i am not sure which is fuse diode here..


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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 18th, 2018, 5:32 
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viewtopic.php?f=10&t=35783
viewtopic.php?f=10&p=241918

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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 18th, 2018, 15:23 
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If you are measuring +2.8V at one of the supplies, then the "fuse diode" (sic) must be OK.

If any regulator has a 0V output, then ...

1/ The regulator may be faulty.

2/ The regulator may not be turned on. Measure the voltage at its Enable pin.

3/ The regulator's output may be shorted to ground. Measure the resistance between the coil (or capacitors) and ground.

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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 30th, 2018, 13:21 
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i have made some more misurement,
in red.


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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 30th, 2018, 18:11 
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Measure the voltages at coils A and B.

Measure the resistance between ground and the 1R0 coil (in the absence of power).


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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 30th, 2018, 19:11 
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in black text:

coil 1R0 to ground= 34 ohm
coil A to ground = + 1 volt
coil B to ground = + 2.8 volt


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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 30th, 2018, 20:48 
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I don't understand why there are two 2.8V supplies, especially since there are no NANDs on the controller side of the PCB. Perhaps one is the controller's Vio supply?

Coil A (1V) would be the Vcore supply for the controller.

The load resistance of the 1R0 coil seems very low. Does the "13 1F" chip get hot?

Is there a direct connection between the 1R0 coil and any of the UART pins? I suspect that one of these pins would be a +3.3V supply (or maybe 2.8V ?). Can you tell us the voltages on the UART pins?


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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 31st, 2018, 9:16 
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UART pins misures to ground to them one by one = 0,0 volts.
the 13 1F stay not hot.
the controller stay a bit hot.


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 Post subject: Re: Kingston Hyperx fury SSD 120G SHFS37A -
PostPosted: January 31st, 2018, 14:19 
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What is the voltage on the Enable pin (EN)?

(Other photos of a similar PCB suggest that the "13 1F" part is equivalent to an APW8804.)


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