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| Kingston Hyperx fury SSD 120G SHFS37A - http://forum.hddguru.com/viewtopic.php?f=10&t=36313 |
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| Author: | positivebit [ January 18th, 2018, 4:53 ] | |||
| Post subject: | Kingston Hyperx fury SSD 120G SHFS37A - | |||
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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| Author: | fzabkar [ January 18th, 2018, 5:32 ] |
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - |
viewtopic.php?f=10&t=35783 viewtopic.php?f=10&p=241918 |
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| Author: | fzabkar [ January 18th, 2018, 15:23 ] |
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - |
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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| Author: | positivebit [ January 30th, 2018, 13:21 ] | ||
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - | ||
i have made some more misurement, in red.
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| Author: | fzabkar [ January 30th, 2018, 18:11 ] | ||
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - | ||
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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| Author: | positivebit [ January 30th, 2018, 19:11 ] | ||
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - | ||
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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| Author: | fzabkar [ January 30th, 2018, 20:48 ] | ||
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - | ||
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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| Author: | positivebit [ January 31st, 2018, 9:16 ] |
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - |
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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| Author: | fzabkar [ January 31st, 2018, 14:19 ] | |||
| Post subject: | Re: Kingston Hyperx fury SSD 120G SHFS37A - | |||
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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