Gigabyte GA-G41MT-S2- Rev:1.3

There is an error when I connect pci tester RESET on and off 2 seconds


I changed 3 processors, and update the new BIOS
What could be a malfunction?

Check Power Supply Unit

Write BIOS F3 version for 1.3 revision into two 8Mbit ROM (M_BIOS and B_BIOS)

Power Supply Unit is good

I'll try it with bios, so I'm reporting

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Posted after 29 minutes 49 seconds:
I returned to the f3 version
But the same case, even it happens without a bios chip removed from the board

Check Power On Button and Reset Button

The Motheboard stands at my service desk.
Nothing is connected except power and processors
I have a lot of experience with the service, this is one of the hardest things.
I do not have an oscilloscope not schematics motheboard

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Posted after 6 minutes 32 seconds:
My opinion is that there is a defective nort bridge or ite8718f-s chip ?

Good. I correctly understood that the motherboard turns off after 2 seconds after power on?

Motheboard turns On and remains on,but as I listed on the Pci tester, the LED diode reset turn on and turn off each 2 seconds

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Posted after 5 minutes 1 second:

RAM not connected ?

not connected

It is normal ? Without RAM - abnormal state of the PC...

What voltage on cpu cores VCC_CORE
(on chokes or capasitors)?

VCC_CORE-1.10v

I changed the other north bridge, ITE chip
I'm not smart anymore what it might be
I had such a case with bios, but I both removed both the chip and reprogrammed the bios dam from the official site

Did any of you have this case?

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Posted after 7 minutes 10 seconds:
Is there any schematic for this motheboard?

Check signals on 61-65 pins ITE.
Unstable or change of the logical level within 2 seconds?

I replaced the ITE chip, the result remained the same.
I do not have an oscilloscope, as I wrote in a previous post

I think the socket is defective, if there is another idea, I had a pair of plates with this kind of malfunction, but I did not manage to fix a single one

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Posted after 1 minute 58 seconds:
Another question for the experienced, should the ITE chip be from the same board and version?

Check with a multimeter in DC voltmeter mode

remove the radiators from the bridges and take a photo in good quality near them. I'll show you what capacitors you need to check for leakage. maybe a problem in them.

here's the picture

Не совсем понял, но он походу без памяти ее запустить пытается...
И не факт что у него тестер рабочий

What is the voltage on the VCC F_USB1 or F_USB2?
Capacitor EC9 where?

4.97v
the capacitor was damaged during the transport of the board
But it's not up to the capacitors I found a malfunction
The bond is as if it was cut, so hard it can be seen with a magnifier,
here are the pictures attached