- Joined
- Oct 13, 2021
- Messages
- 34 (0.04/day)
Hi there!
Im trying to fix this sapphire r9 390 8gb,
It was working card and I leave PC overnight on, the next day the card has black screen(turn off screen).
Then I realized that memory controler drmos was toasted with fuse 12v pcie slot. Well now I have
12v from replaced fuse,
6.10v for vcc drmos's
5v(from linear regulator)
1.8v from apl5930
0.95v for display
12v from 8pin(and on fuses)
But I dont have PWM that comes from IR3567B controller. I try to measure controller but on pwm(output) I have 1.6v DC, not a signal, that goes to IR3553.On the microcontroller I have his vcc 3.2v and Enable I think 3.2v either.
So I dont have voltages for memory and gpu.
On the picture some drmos is missing(one on memory and two on cpu power supply) . Can somebody help me what to do next and how to get pwm signal from microcontroller.
Anyone to help please?
Im trying to fix this sapphire r9 390 8gb,
It was working card and I leave PC overnight on, the next day the card has black screen(turn off screen).
Then I realized that memory controler drmos was toasted with fuse 12v pcie slot. Well now I have
12v from replaced fuse,
6.10v for vcc drmos's
5v(from linear regulator)
1.8v from apl5930
0.95v for display
12v from 8pin(and on fuses)
But I dont have PWM that comes from IR3567B controller. I try to measure controller but on pwm(output) I have 1.6v DC, not a signal, that goes to IR3553.On the microcontroller I have his vcc 3.2v and Enable I think 3.2v either.
So I dont have voltages for memory and gpu.
On the picture some drmos is missing(one on memory and two on cpu power supply) . Can somebody help me what to do next and how to get pwm signal from microcontroller.
Anyone to help please?