Hello!
I have this very weird problem, I got this rx580 nitro saphire and the fans don't even spin but the saphire logo is lit.
All voltage rails are present except for VCORE at the coils, then I started checking NCP81022 and it has voltage but vdd pwrgd is missing, enable EN is missing it shows 2.5ohm, everything seems fine, i tried checking the back of the card, to see where the enable pin goes, i dont have a schematic so i started touching randomly until i measured a resistor on the back and the fans started spinning, now I was amazed like what is wrong here? So I thought it's a coincidence, and everytime I measure it it just works, I tried booting it it boots sometimes sometimes it doesn't, all kind of problems the motherboard restarts and sometimes cuts, so I tried putting the probe on the back of the resistor and keeping it there, and it finished booting and I even tested uni engine, and after some minutes it restarted, now what in the name of electronics is this?
Interference? Bad capacitor somewhere discharging to the multimeter? What's happening I couldn't find the problem, all voltage rails are present
Also someone did a terrible job at reflowing it before, but it doesn't seem to be affected by that, or maybe it does? I tried bending a bit and all, you can see the fans sometimes trying to kick in then off without even touching it.
I have this very weird problem, I got this rx580 nitro saphire and the fans don't even spin but the saphire logo is lit.
All voltage rails are present except for VCORE at the coils, then I started checking NCP81022 and it has voltage but vdd pwrgd is missing, enable EN is missing it shows 2.5ohm, everything seems fine, i tried checking the back of the card, to see where the enable pin goes, i dont have a schematic so i started touching randomly until i measured a resistor on the back and the fans started spinning, now I was amazed like what is wrong here? So I thought it's a coincidence, and everytime I measure it it just works, I tried booting it it boots sometimes sometimes it doesn't, all kind of problems the motherboard restarts and sometimes cuts, so I tried putting the probe on the back of the resistor and keeping it there, and it finished booting and I even tested uni engine, and after some minutes it restarted, now what in the name of electronics is this?
Interference? Bad capacitor somewhere discharging to the multimeter? What's happening I couldn't find the problem, all voltage rails are present
Also someone did a terrible job at reflowing it before, but it doesn't seem to be affected by that, or maybe it does? I tried bending a bit and all, you can see the fans sometimes trying to kick in then off without even touching it.
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