How to maintain PCBs assembled

Surface-mount technology is a design standard for constructing electronic circuits where the components are mounted directly onto the surface of the printed circuit board (PCB). The components have small metal tabs (or caps) that are soldered directly to the surface of the printed circuit board on tin-lead, silver, or gold plated copper pads, called solder pads. How is the combine between PCB and components? How long will it perform well? How should we maintain PCBA boards? And how to make PCBA boards use longer? Now Shenzhen china PCB manufacturer provide PCBA maintenance method for you.

1. Maintenance half a year:
(1)Clean the dust on the PCB board every quarter. You can use the special cleaning fluid to clean them. After all the dust is cleaned, use the blower to dry the boards.
(2)Check the components to see whether there is trace showing over heat or not and the electrolytic capacitors have the leakage phenomenon or not, if it is, then we should replace the bad ones.

2. Maintenance annual:
(1)Clean the dust on the PCB.
(2)Test the capacity of the electrolytic capacitor on PCB. If the electrolytic capacitor's capacity is less than 20% of the nominal capacity or the electrolytic capacitor working time lasts 10 years, we should replace these PCB boards to ensure the performance function of circuit board.
(3)Regarding to the high power device coated with thermal grease, you should check whether the thermal grease is dried well or not. If it is dried well, you should wipe out it, and then coat new thermal grease in order to prevent the high power device burning out due to bad heat dissipation of the PCB circuit board.