What is the estimated price of a computer motherboard inspection card?

The prerequisite is that the digital light of the POST card should be on, and then check the POST card manual according to the displayed number.

--Diagnostic card** table.

After booting up, the motherboard test card directly displays the fault cause and troubleshooting method of "ff or 00" (attached: computer motherboard fault diagnosis card** table)After booting up, the motherboard test card directly displays the fault cause and troubleshooting method of "ff or 00" (attached: computer motherboard fault diagnosis card** table).

I read the post of 6604856 cat friend's original "how to use the motherboard error detection card",I think it's very well written,Simple and easy to understand and explain the problem,The statement about the memory and graphics card is more correct,But for the post said "If it is plugged in and directly displays FF or 00, it means that the CPU has not started to work,The worst case is that your CPU is finished,Silence for 3 minutes and then rush to the computer city to spend money" I want to add a little addition,Communicate with cat friends,Welcome to high finger correction!

In my experience of repairing motherboards, it is true that the CPU is not working, but the possibility of CPU damage is much lower than the following four reasons:

One. ATX power supply is damaged, lack of a certain set of voltage for the CPU, FF or 00 will also appear, you can change a good power supply to try, if it is normal, the original power supply is damaged, you can use a multimeter to measure the voltage of each group of the 20-pin plug of the power supply and compare it with a good power supply, and you will definitely find faults;

Two. Due to long-term thermal expansion and contraction, the solder joints under the CPU seat of the motherboard will be desoldered (solder joint cracking), and FF or 00 will also occur, especially if the CPU is using the old-fashioned vertical riser card, the CPU socket solder joint cracking of the adapter card is more, and it is not easy to see it with the naked eye, so you need to use a magnifying glass. Repair Method:

Use a hot air gun to evenly heat the solder joint until the solder joint melts;

Three. Check whether the electrolytic capacitor near the CPU is bursting, the bursting capacitor will bulge up and down, it is easy to find with the naked eye, you can replace it with a capacitor of the same specification, and the fault will be eliminated;

Four. The power triode near the CPU burns out, you can use a multimeter to measure these triodes, which are generally manifested as breakdown (the resistance value is close to zero), find the same or can replace the triode, and friends who are engaged in repairs will generally remove them from the scrapped motherboard.

The easiest to boot.

Shows C1 stuck memory issue.

Display 26 displays do not light up.

Graphics card issues. The boot BIOS light does not flash.

CPU and motherboard.

There's one that doesn't work.

The diagnostic card has a ** table. You can look for it.

That thing doesn't work, and it will show ffff

1. PCI is the majority, but there are also PCI-E interfaces.

2. If the motherboard cannot be turned on, the diagnostic card may display FF. (I haven't used it exactly, so it's not very clear).

3. Generally, the judgment problems rely on the replacement method, and the good hardware is replaced one by one to test.

It has a role.

When the motherboard fails to boot normally, it can display**, and judge the problem of which step the motherboard boots up to according to **, which helps to judge the scope of the fault.