Hi I'm working on a MSI GTX1070 Gaming 8G. Vmem is missing. Strange enough the card otherwise is working: All other voltages are there and the card is even detected. Obviously no image output because of "missing" memory.
This is a picture of the uP1642P. It controls the memory voltage rail. Primary suspect of the fault.
Datasheet uP1642P
Pin 21 PVCC should be 5V. Datasheet says 6.5V max.
But on this card it is actually getting 12V (measured), only a 2 ohm resistor separating it from the 12V rail.
Is that a design fault?
If I replace the IC, should I reroute PVCC to the 5V rail instead?
This is a picture of the uP1642P. It controls the memory voltage rail. Primary suspect of the fault.
Datasheet uP1642P
Pin 21 PVCC should be 5V. Datasheet says 6.5V max.
But on this card it is actually getting 12V (measured), only a 2 ohm resistor separating it from the 12V rail.
Is that a design fault?
If I replace the IC, should I reroute PVCC to the 5V rail instead?
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