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CompactFlash, SD, MMC, USB flash storage. Anything that does not have moving parts inside.
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Kingston Hyperx fury SSD 120G SHFS37A -

January 18th, 2018, 4:53

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..
Attachments
20180118_094329.jpg
20180118_094349.jpg

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 18th, 2018, 5:32

viewtopic.php?f=10&t=35783
viewtopic.php?f=10&p=241918

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 18th, 2018, 15:23

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.

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 30th, 2018, 13:21

i have made some more misurement,
in red.
Attachments
diagnostic.jpg

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 30th, 2018, 18:11

Measure the voltages at coils A and B.

Measure the resistance between ground and the 1R0 coil (in the absence of power).
Attachments
coils.jpg
coils.jpg (167.2 KiB) Viewed 1530 times

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 30th, 2018, 19:11

in black text:

coil 1R0 to ground= 34 ohm
coil A to ground = + 1 volt
coil B to ground = + 2.8 volt
Attachments
coils.jpg
coils.jpg (106.5 KiB) Viewed 1525 times

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 30th, 2018, 20:48

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?
Attachments
UART.jpg
UART.jpg (73.24 KiB) Viewed 1508 times

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 31st, 2018, 9:16

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.

Re: Kingston Hyperx fury SSD 120G SHFS37A -

January 31st, 2018, 14:19

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.)
Attachments
APW8804_app_cct.gif
APW8804_pinout.jpg
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