I have a dead aorus rx580 8gb. pcie fuse is open above pins 1, 2 and 3, 12V. The other side of the fuse is not shorted to ground. i have 6k ohms on it. resistance from mem controller ~20ohms, GPU phases ~.06ohms. What are the odds that it was blown from a MB surge and not a GPU component? I got this from a friend and dont know the history.
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Re: RX580 Fuse blown
One way to find out - replace the fuse. I would expect it blew due to excessive current being drawn, not a 'surge'Follow me on YouTube
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Re: RX580 Fuse blown
OK good news and bad news.
Fuse replaced, Was able to get picture.
Booted into windows. showed up fine in GPUZ
when i started my benchmark the fuse blew again..
So something's wrong with it under load.
Anyone got any ideas?Comment
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Re: RX580 Fuse blown
Have a look at the board without the plastic shield & fans, maybe a few bad caps? bad thermal grease? Post some pictures.Comment
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Re: RX580 Fuse blown
i replaced the fuse again and powered it up without the back plate so i can take measurements.
note on the backside lower right, i removed a sop-8 LM358 dual amplifier. i thought it was giving weird values. the vcc is supplied by the 12v rail.Attached FilesComment
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Re: RX580 Fuse blown
Since this was your friend's card and since you can get to GPU-Z after replacing the blown fuse... try pulling the BIOS with GPU-Z and also check all the clocks and voltages for all performance levels. It could be that your friend tried to do some overclocking by flashing a new OC BIOS on there, and maybe that's pushing the VRMs too hard.
On the other hand, if you can verify that the BIOS is original stock one that the card is supposed to ship out with, then get MSI Afterburner and lower the maximum power limit of the GPU. After this, stress test and see if the fuse blows again. If it doesn't, increase the power limit slightly, and try again. The idea is to find out where the fuse blows. If it blows way below what this card is rated for, perhaps one of the phases on the GPU V_core may be faulty. Now troubleshooting that can get more complicated.
But do the above checks and let us know what you find. Maybe some new information will come out of that.Comment
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Re: RX580 Fuse blown
Replaced fuse and put that dual amp back. i dont think its working correctly.
Model LM3580
pins
1. output1 - 1.9mV
2. input1(-) - .4V
3. input1(+) - .7V
4. Ground
5. input2(+) - open
6. input(_) - 2.5V
7. output2 - 2mV
8. VCC - 12.26V
Anyways, booted into windows and using AMD memory tweak i disabled phase 4-7 and dropped P3 to 1000mhz and 875mV
Kept memory as is P2 = 2000mhz @950mV
The card runs fine through the benchmark. So i guess the memory circuit is fine and there is in fact an issue with one or more of the vcore phases.Last edited by sdinelli; 02-06-2021, 02:55 PM.Comment
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Re: RX580 Fuse blown
I enabled all phases and its worked at 900mV
well actually the driver crashed. but fuse didnt blow.
I raised it to 950mV and the fuse blew
What does this info tell me?Comment
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Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
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The battery is HT03XL and with the built-in component test from HP, in the Power section, I get an error: Logic State: Calibration required (20), Charge state: Blown Fuse (42)
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Hey,
I have a Gigabyte 980TI Windforce. No shorts on the main 8 pin PCIE power connectors. The 8 phase buck converter inductors are showing 2.5ohms.
The card doesn't power up at all - no lights, no fans, nothing. I noticed that all of the 8 phase inductors are showing 0V. I couldn't find a fuse for the 8pin power connectors.
I did notice that the PCIE x16 connector 12V line has a fuse F3 (10A marked on it) which is blown. It is reading 16ohms on one end.
1st Question: Is there some logic on the board that checks the 12V on the PCIE x16 bus connector...
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