• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Vega 64 missing pex rail?

A

aln153

n00b
Joined
Apr 19, 2022
Messages
2
Hi all!

I have a vega 64 card which has a problem with the 0.8v pex rail.
The inductor shows 0.00 ohms when probed.
I removed the mosfet, inductor and large capacitor, and the short only appears on the right pad of the inductor (closest to gpu).

My question is, is the core dead or possibly alive?
 
pcie 12v - ok
pcie 3.3v - ok
12v inductors 2x - ok
5v ldl 2x - ok
mem inductor - 17ohm
hbm mem - (34ohm) ok
Voltage injected - 0.8v at vcore - 2.5a+- stable

Problems
PEX inductor(13ohm) - 0ohm = fail
1.8v inductor - fail (1.3kohm) (0.13k ohm)
 
Strong possibilities include a short through the GPU die or PCB itself, but it could be something as simple as a cracked MLC cap.

Have you tried using isopropanol or a thermal camera to see if you can figure out where that 2.5A is going?
 
You must log in or register to reply here.
Back
Top