Bought this second hand motherboard.
Seller told me was working fine.
Boot loop happens
24 pin + 8 pin power connectors without any processor, ram, mouse, keyboard installed. Loops inmediately, lasts half a second
Power with only CPU installed, the loop lasts 2-3 seconds.
No post, no beeps.
Motherboard looks fine, nothing rusty or burnt.
I´ve flashed official Gigabyte BIOS with CH341a usb programmer, both main & backup BIOS chip. Procedure finishes correctly.
PCH gets warm even loop is very short. CPU keeps cold.
Digital multimeter measurements:
Inductors near PCH show 12v & 1v
Inductors near cpu socket shows 1,02v & 0,86v
Inductor near RAM socket shows 1,2v
In continuity mode all solid capacitor seem good, even smd caps tested.
There are other many smd chips i haven´t tested, dont know how.
Bios chip is a Macronix 25L6473F, 8 pin is missing voltage.
Two PSU´s & processors tested with the motherboard.
Sorry for my horrible explanation, i am not a native english speaker.
Thanks
Seller told me was working fine.
Boot loop happens
24 pin + 8 pin power connectors without any processor, ram, mouse, keyboard installed. Loops inmediately, lasts half a second
Power with only CPU installed, the loop lasts 2-3 seconds.
No post, no beeps.
Motherboard looks fine, nothing rusty or burnt.
I´ve flashed official Gigabyte BIOS with CH341a usb programmer, both main & backup BIOS chip. Procedure finishes correctly.
PCH gets warm even loop is very short. CPU keeps cold.
Digital multimeter measurements:
Inductors near PCH show 12v & 1v
Inductors near cpu socket shows 1,02v & 0,86v
Inductor near RAM socket shows 1,2v
In continuity mode all solid capacitor seem good, even smd caps tested.
There are other many smd chips i haven´t tested, dont know how.
Bios chip is a Macronix 25L6473F, 8 pin is missing voltage.
Two PSU´s & processors tested with the motherboard.
Sorry for my horrible explanation, i am not a native english speaker.
Thanks
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