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| amd radeon rx 480 8GB https://vlab.su/viewtopic.php?f=48&t=121971 |
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| xDreamcore [ 29 дек 2021, 00:13 ] | |
| Заголовок сообщения: | amd radeon rx 480 8GB |
Hello everyone, I have same problem like in this topic viewtopic.php?f=48&t=92026&p=913593&hilit=%2Au1000%2A#p913593 1) I replaced U100 - now i have PERSTB_BUF (3.3V - on 2pin of U1000) 2) I am missing VDDC_PWR_GOOD signal on 1pin of U1000 3) PWM controller IR 3567B - pin11 - PWRGD/VRDY1=0V, pin12 - PWROK/EN_L2/INMODE = 0V So the solution is to change PWM controller IR3567B? What i found, there is problem, that this chip is programmed so i need to take it from donor board, is it true? Thank you very much! |
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| EYES [ 06 янв 2022, 06:26 ] | |
| Заголовок сообщения: | Re: amd radeon rx 480 8GB |
Yes the vcore controller needs to be flashed or taken from a donor. Try giving power from LBP to pwr good and see if it works. |
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| pEEp [ 06 янв 2022, 16:53 ] | |
| Заголовок сообщения: | Re: amd radeon rx 480 8GB |
xDreamcore писал(а): pin11 - PWRGD/VRDY1=0V Thats your first problem. But "zero" step is MVDD - how it feels? |
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