ASUS 775 pin board, the power chip uses 3180, how to repair the CPU without power supply

Dear users, you can check whether the power supply interface is plugged in or not, whether the pins are broken, and then check whether the pins on the CPU or motherboard CPU interface are damaged, and then see if there is a problem with the power supply, and send it for repair if there is no problem.

The reason is that the MOS tube is broken Because the MOS tube that provides the VTT voltage is broken, the VTT of the CPU has no voltage, resulting in the logic gate circuit has been at a low level output, and the ADP3180 does not have the voltage on the EN pin, and the ADP3180 does not work.

It is recommended that you go to the surrounding maintenance points to repair them, and the busier and messier you will become.

What kind of tube is the EN external connection of this board, the pull-up voltage is, without this voltage, even the op amp that controls it will give a 5V, and the double does not give the EN signal, as if it is so.

Oh, I don't know how to start after checking the problem for a few days, and as soon as the problem is raised, it will be clear The reason is still caused by the broken MOS tube Because the MOS tube that provides the VTT voltage is broken, the VTT of the CPU has no voltage, resulting in the logic gate circuit has been at a low level output, and the ADP3180's EN pin has no voltage, and the ADP3180 does not work I don't know if my statement is correct.

It's the board of ASUS P5S533-TVM S EN I don't know where it is connected, it should be from LM393.

Let's see if the vron signal is coming.

Hello, first look at whether there is a memory voltage, then see if there is a bridge voltage, and then the CPU voltage. Check whether the power management chip VCC VID PG EN or SS FB has a short circuit or open circuit, and then check the voltage of VCC VID PG EN or SS. Hope it helps.

Check whether the power management chip VCC VID PG EN or SS FB has a short circuit or open circuit phenomenon, and then check the voltage of VCC VID PG EN or SS **abnormal check**.

This is a motherboard wiring problem.。。 Try replacing the CPU base. This kind of problem is relatively large. It is estimated that there is no way to return to heaven.

Let's take a look at the other voltages, memory, and bridge power supplies.

The case of the north and south bridges is that the south bridge should not send a reset signal, and the first of all, the major power supply of the south bridge needs to be normal. The clock needs to be normal, if you want to send a reset, you also need to check if you test VRMPG if it doesn't, first of all, you have to check whether it is pulled low or not.

It's not even standby, but it's out of the CPU power supply, what kind of chip is this motherboard, and it can be on it, speechless.

The landlord is joking.,There's no pg where else does it come from.。 Voltage.

Feeling messy, all the power supply is normal? Are the clocks all normal? Both PGs that the south bridge issued a reset have?

Hello, the biggest possibility of not turning on and no alarm failure, that is, the most doubtful, is: 1Power supply;; 3.

Mainboard. Because as long as one of these three pieces of hardware is faulty, the motherboard will not start, and the motherboard will not alarm if it does not start. Faulty is not necessarily a faulty accessory, but a poor contact is also a fault.

So follow the steps below to check:

1.Measure whether the power supply can output each voltage normally, and use the power supply to replace it directly when there is no measurement tool.

Whether the connection between the power supply and the motherboard is reliable, 20 plugs can be plugged and unplugged. Whether the power switch on the panel is damaged. If necessary, you can directly short the PWR SW header on the motherboard to see if the motherboard can be started. Perform the following checks after you are confident that the power supply is working.

2.Plug and unplug the CPU, if it doesn't work, change the CPU.

If the CPU can be started after unplugging and unplugging, it means that the CPU is in poor contact. After unplugging the CPU, it can't be started, and the CPU may be damaged, so it is still not possible to change the CPU or change the CPU, and the only thing left is the motherboard.

3.The first choice for motherboard inspection should be whether the power supply of the CPU socket is normal, followed by the south bridge and the north bridge, each crystal oscillator, clock generator, etc. This can be done with the help of a motherboard diagnostic card. Of course, this is not something that the average DIYER can do. Only sent for repair.

CPU is not connected to power.

Usually 3 cases:

1. The connection between the power cord and the motherboard is not good, or it is not stable enough. Unplug and reinstall.

2. The motherboard is broken. The main thing is that the power chip is broken.

3. The CPU is broken.

It is recommended to take down all the accessories such as memory and reassemble them again, and use an eraser to clean up the gold finger, and it is best to empty the CMOS again, that is, remove the motherboard battery and put it for about five minutes.

If the CPU is not hot, it is not working, and if you change the CPU, it is a problem with the board.

You just see if the capacitors on the motherboard are in good condition. That is, the capacitor is easy to repair if it is broken, and if the chip is broken, you can just buy a second-hand board, and there is no value for repair.

If it is a notebook, first check the PG signal of the CPU power management chip and send it to the south bridge, if it is not delivered, check all the PG signals and PG signals, there is a relationship with the PG signal Specifically, there is no board is different, so the components between the PG signals are also different, but it will probably be the stage of the PG signal together with the line to the south bridge, such as the signal is delivered, the CPU does not have a PG signal, take the south bridge has a problem, simply put, it is to check the power management of the CPU and the south bridge.

Check the pins of the PWM control chip to define the signal pins about PG. In addition, if the power supply is abnormal in other places, it may also cause the cup to have no PG

Can you explain it in detail. CPU PG signal generation conditions. Thank you.