A rigid PCB is the most traditional form of board in the PCB world. Common multi-layer PCB circuit boards are generally 4-layer boards or 6-layer boards, and complex multi-layer boards can reach more than a dozen layers. There are both high-speed logic circuits and linear circuits on the 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. To maximize the ground area of the linear circuit. So how should the PCB circuit board be maintained?
1. Seasonal maintenance:
(1) Clean the dust on the PCB circuit board quarterly, and use the special cleaning solution for the circuit board to clean it. After cleaning the dust on the circuit board, dry the circuit board with a hair dryer.
(2)Observe whether the electronic components in the circuit have traces of high temperature, and whether the electrolytic capacitor has bulged and leaked liquid, and if so, it should be replaced.
2. Semi-annual maintenance:
Observe whether the electronic components in the circuit produced by the circuit board factory have undergone traces of high temperature, and whether the electrolytic capacitor has bulged and leaked, and if so, it should be replaced.
The dust on the PCB circuit board is cleaned every quarter, and the special cleaning solution 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.
3. Annual maintenance:
(1) Clean the dust on the PCB circuit board.
(2)Sampling the capacity of the electrolytic capacitors in the PCB circuit board. If the capacity of the electrolytic capacitors is found to be lower than 20% of the nominal capacity, they should be replaced. Generally, the lifespan of the electrolytic capacitors should be replaced for about ten years to ensure the PCB circuit. performance of the board.
(3) For high-power devices coated with heat-dissipating silicone grease, check whether the heat-dissipating silicone grease is dry and solid. For dry-solid heat-dissipating silicone grease, remove the dry-solid heat-dissipating silicone grease and apply new heat-dissipating silicone grease to prevent the PCB circuit. The high-power devices in the board burned out due to poor heat dissipation.
