PCB circuit board manufacturers, teach you how to maintain circuit boards

PCB circuit board manufacturers, teach you how to maintain circuit boards

Many people have this problem, how should PCB circuit boards be maintained? How to make the life of the PCB circuit board longer? Now let the net deep circuit analyze the maintenance of PCB circuit board for you.

The PCB circuit board adopts the method of printing etching resist to make the circuit and drawing. PCB circuit boards can be divided into single-sided, double-sided and multi-layer boards according to the number of circuit layers. Common multilayer boards are generally 4-layer boards or 6-layer boards, and complex multilayer boards can reach more than a dozen layers. There are both high-speed logic circuits and linear circuits on the PCB circuit board. They should be separated as much as possible, and the ground wires of the two should not be mixed, and they should be connected to the ground wires of the power supply terminal. Try to maximize the grounding area of the linear circuit. How should PCB circuit boards be maintained?

PCB circuit board

1. Semi-annual maintenance:

Observe whether the electronic components in the circuit have traces of high temperature, and whether the electrolytic capacitors have bulged and leaked, and should be replaced if any.

The dust on the PCB circuit board is cleaned quarterly, and the special cleaning liquid for the PCB circuit board can be used for cleaning. After the dust on the PCB circuit board is cleaned, the PCB circuit board can be dried with a hair dryer.

2. Annual maintenance:

Clean the dust on the PCB circuit board.

The electrolytic capacitor capacity in the PCB circuit board is sampled. If the capacity of the electrolytic capacitor is found to be less than 20% of the nominal capacity, it should be replaced. Generally, the life of the electrolytic capacitor should be replaced after ten years of work to ensure the PCB circuit board. Work performance.

For high-power devices coated with heat-dissipating grease, check whether the heat-dissipating grease is dry or not. For dry heat-dissipating grease, remove the dry heat-dissipating grease and apply new heat-dissipating grease to prevent PCB board The high-power devices burn out due to poor heat dissipation.