What is the fault diagnosis of windows computer motherboard?

Windows computer motherboard fault judgment is how, I believe many inexperienced people are helpless, this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

profile

Analyze computer motherboard failure, what do you want to do?

method/step

(1) All kinds of connecting line short circuit, open circuit fault

All kinds of connecting lines should not be connected to the short circuit, the connection is disconnected;IC chips, resistors, capacitors, transistors, inductors and other components pin broken, short circuit, breakdown; connecting lines, pins and power supply, ground short circuit conduction; printed board line broken, short circuit and pad off. These are common failures.

(2) DMA controller and auxiliary circuit failure

DMA controller function is stronger, failure rate is higher; auxiliary circuit chip and input signal circuit are also prone to failure.

(3) RS-232 serial interface controller fault

PC serial interface controller has independent, also has with other interfaces together. Serial interface failure rate is high.

(4) Clock controller, bus controller fault

Clock controller, bus controller, bus driver, control command chip, all may have faults.

(5) Memory chip RAM failure

There are many memory chips in PC, the utilization rate is high, and the failure rate of the chip itself is also high.

(6) Data bus fault

CPU, memory, data transmission bus of I/O device, bus buffer register/driver, etc. in motherboard also have degree

Different failures occur.

(7) Address bus fault

It is represented in the address bus, address latch and address buffer register/driver of CPU transmitting address in motherboard.

(8) Memory control signal and address generation circuit failure

Circuit error indicating RAS/CAS row/column address strobe signal, row/column address delay control signal and row/column address

(9) Poor contact faults such as individual sockets and pin loosening

The chip and socket due to corrosion, oxidation, elastic weakening, pin solder off, broken and switch contact caused by poor fault.

(10) I/O channel slot failure

It refers to the fault caused by copper sheet falling off, elasticity weakening, broken short connection, pin weak welding, desoldering, excessive dust or falling foreign matter in I/O channel slot.

(11) Failure caused by special circumstances

It refers to the faults caused by impact, strong earthquake, electric shock, sudden voltage rise, load mismatch or unreasonable design, as well as artificial faults caused by improper installation, setting and use. Timer, counter, interrupt controller, parallel interface controller chips will also produce failures, but the failure rate is generally very low.

(12) Failure of power supply controller

Generally, the power output controller has a large current and a large heat generation. If the quality of the control chip or the integrated block is poor or the heat dissipation is poor, the failure rate is high. As well as the power filter capacitor around it, due to long-term work in high temperature environment, it will also fail due to electrolyte drying, thus causing the ripple of power output to increase and causing the motherboard to work unstable. The above faults are not generated on a motherboard, of which about 60% of the faults will cause the motherboard to fail to start working; 35% of the faults will cause the motherboard to work abnormally; and about 5% are random special faults, which are characterized by unstable motherboard status.

After reading the above, do you know how to judge the failure of windows computer motherboard? If you still want to learn more skills or want to know more related content, welcome to pay attention to the industry information channel, thank you for reading!