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MSI Z270-A-PRO probably died pch ??
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allas [ 26 ноя 2021, 18:16 ]
Заголовок сообщения:  MSI Z270-A-PRO probably died pch ??
Hi motheboard MSI Z270-A-PRO the cpu LED is on ( the pins are straight ) . Motheboard turn on no memory , cpu voltage. All resistances are good , on pch 40ohms. I found boot sequences to this motheboard. The post stops at SYS_PWROK , the second PCH_PWROK its no present. So i think bridge is died .
Изображение
alex68q [ 26 ноя 2021, 22:17 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
pch_clk актуален после PCH_PWROK
aleksros [ 27 ноя 2021, 00:10 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
я бы начал с проверки VPP
allas [ 27 ноя 2021, 00:45 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
On VPP 5V but 0V pw good 7-legs MP2147
aleksros [ 27 ноя 2021, 01:33 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
allas писал(а):
VPP 5V

this pwm is dead. change it.
it must be 2.5V with pwm signal, but not 5V constantly.
allas [ 02 дек 2021, 23:45 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
Ok replace MP2147 now have 2,5V pwm and power on cpu and memory. But 0V on VCCGT . I found that 1 phase vccgt control rt3606 and another rt9624.
aleksros [ 03 дек 2021, 01:31 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
We do not need vccgt yet.
look at the oscilloscope exchange on the BIOS, 5 pins. if there are pulses, flash it with the programmer.
allas [ 03 дек 2021, 12:47 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
On 5 legs i have puls signal . Flash bios but still turn on cpu diode on motheboard.
allas [ 04 дек 2021, 20:41 ]
Заголовок сообщения:  Re: MSI Z270-A-PRO probably died pch ??
CPU-PWRGD only 0,9V its normall value ??
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