Hi everyone,
I've been trying to find the cause for a short on 12v (~20 Ohms to
ground) on a GTX 1060 for a while now, The card has no branding but
as far as I can tell it is a Palit model. The short only shows
up on the PCIe-connector but not the PSU connector.
Initially I suspected a faulty MOSFET in the memory power supply.
However after removing most of the MOSFETS/integrated power stages
from the board: Q16 (SM4377 CS70X), Q17, Q18 (4503NH CS740), U10,
U12, U14 (SIC632) and the PWM controller (NCP81174) the
short is still there. As a last resort I decided to inject .7 V into
the 12V rail on SC87, hoping that a faulty component would heat up.
Unfortunately the card only draws ~40mA, not enough to produce any
significant heat.
I already took a look around here on the forum to find some
schematics, unfortunately the Palit GTX 1060 cards seem to differ
a lot from many other GTX 1060 models and use a different naming
scheme for the components on the PCB.
Since I've run out of ideas on how to tackle the problem
systematically I hope that someone here has some advice how I could
proceed cleverly to find the faulty component(s), without resorting
to randomly removing/replacing components until I get lucky.
Disclaimer: I realize that probably more info is needed to help me
with the problem. If you need any additional data/info/measurements
to be taken let me know which data is missing and I'll gladly try to
provide it.
Cheers
Traceless
I've been trying to find the cause for a short on 12v (~20 Ohms to
ground) on a GTX 1060 for a while now, The card has no branding but
as far as I can tell it is a Palit model. The short only shows
up on the PCIe-connector but not the PSU connector.
Initially I suspected a faulty MOSFET in the memory power supply.
However after removing most of the MOSFETS/integrated power stages
from the board: Q16 (SM4377 CS70X), Q17, Q18 (4503NH CS740), U10,
U12, U14 (SIC632) and the PWM controller (NCP81174) the
short is still there. As a last resort I decided to inject .7 V into
the 12V rail on SC87, hoping that a faulty component would heat up.
Unfortunately the card only draws ~40mA, not enough to produce any
significant heat.
I already took a look around here on the forum to find some
schematics, unfortunately the Palit GTX 1060 cards seem to differ
a lot from many other GTX 1060 models and use a different naming
scheme for the components on the PCB.
Since I've run out of ideas on how to tackle the problem
systematically I hope that someone here has some advice how I could
proceed cleverly to find the faulty component(s), without resorting
to randomly removing/replacing components until I get lucky.
Disclaimer: I realize that probably more info is needed to help me
with the problem. If you need any additional data/info/measurements
to be taken let me know which data is missing and I'll gladly try to
provide it.
Cheers
Traceless
Comment