P8H67-M PRO Usb Device Over Current Status Detected

Slave82

All usb are good have voltages.
Has anyone encountered this problem, I have had a couple of times so far but failed to resolve it
changed 3 processors
the pins on the socket are good

NEME$I$

Slave82
Hello, if you have a boardview on the Board, check the resistor assemblies URN1 URN2 URN3 URN4 most likely you will find a break in one of the assemblies
You should also check whether the power supply voltage is present on the USB ports 5V

aleksros

Download boardview for this model motherboard and find circuit OC#1, OC#2 and etc. Check it.

Slave82

I changed the resistors but same problem
when i enter new bios via programmer it can enter bios but after first save it goes back to the beginning and goes off after 15 seconds

dennis85

All usb ports have +5 voltage present? If yes, and resistors URN(1,2,3,4) is changed/good, and post still show overcurrent warning -> south bridge is damaged.

Slave82

that all usb ports have 5 volts
the resistors were changed just in case al were good

aleksros

what about this signals? :wo)(ll:

Slave82

I don't have an oscillator

aleksros

Slave82 писал(а):

I don't have an oscillator

Don't need oscillator. It dc signal. 3 volt or 0 volt. All of them must be 3 volt.

dennis85

Slave82 писал(а):

I don't have an oscillator

You don't need oscilloscope now. Just do measure voltage at 1,3,5,7 pin on URN4, and 1,3,7 pin on URN2.

Slave82

URN4
1-3v
3-3v
5-0v
7-0v

URN2
1-3v
3-3v
7-3v

dennis85

Slave82 писал(а):

5-0v
7-0v

Here your problem. Measure resistance on this lines compare to ground.

aleksros

urn4 - 5,7 - bad
now check urn1 pin 4, 2

I think uf6, uf7 is bad

Slave82

URN1
2-0v
4-0v

my version of the board is 1.05

aleksros

check UF6, UF7

dennis85

Here +5V present?

Slave82

has all the voltages in those places more precisely 5volts

aleksros

find broken trace from USB to URN1

dennis85

Slave82 писал(а):

has all the voltages in those places more precisely 5volts

Place temporary wire from USB +5V to 2,4 pin of URN1 and try boot-up the motherboard. If she will work propertly, you can seeking damaged track, or create some bypass circuit, like a recommended for temporary.

Slave82

Tried but same case

aleksros

try what?

are you have 5v on usb1314? are you have 5v on urn1 pin4? it same wire! take off ud7, find broken trace.
are you have 5v on usb1112? are you have 5v on urn1 pin2? it same wire! take off ud6, find broken trace.

Slave82

I have 5 volts in all places

aleksros

Slave82 писал(а):

URN1
2-0v
4-0v
have 5 volts in all places

What about this? I don't understand.

Slave82

I'm giving up!

aleksros

Take off memory, motherboard don't will poweroff. You have a time for measurement..
Measure votage on USB1314 and USB1112, then measure voltage on URN1 pin 2 and pin4.
Result write here.

P8H67-M PRO Usb Device Over Current Status Detected

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