PCB Technical - PCBA includes labor and materials, know if the PCB is broken?

The concept of PCBA foundry is relatively large. In the field of PCBA processing, PCBA package of labor and materials refers to the full-process service provided by suppliers from circuit board production, raw material procurement, patch processing, testing, dip plug-in, assembly, etc. It can save customers time, cycle, inventory and other costs.

PCBA contracting labor and materials can reasonably and effectively save customers' time and labor costs. The whole process of production and manufacturing is controlled by professional suppliers, which avoids bargaining and waste of time in the procurement of various electronic materials, and can reasonably and effectively reduce inventory costs., Inspection time, personnel expenses, etc. The price of PCBA labor and materials seems to be too high. PCB factories can actually reduce business costs and allow companies to concentrate on their special areas, such as design, research and development, Market, after-sales service, etc.

A very critical process in the PCBA contracting of labor and materials is to select excellent suppliers for PCBA processing. It is undeniable that there are indeed some merchants in the market that sacrifice customer quality and steal raw materials to obtain excess profits. It is not long-term. Lepeng Technology believes that this type of approach is a bottom line that will never be touched for companies that are aspiring to grow and develop in the manufacturing industry. Therefore, the most important thing for auditing suppliers is to feel attentively. What they have done, PCBA's attitude toward the world, and the perspective of solving problems for customers, these aspects are better than equipment, factory size, certificates, etc.

Digital product manufacturing SMT chip processing has developed for decades. The manufacturing industry has become saturated with competition. The average profit rate of the manufacturing industry is low and stable. There are countless suppliers in the market who have no bottom line to fight for the price, and these are often just In order to split the cost or survive the needs, customers familiar with electronic manufacturing are very aware of the transparent quotation of the market, even if it contains components, so they can completely accept the package of labor and materials, and only need to provide reasonable profits to the supplier. .

Printed circuit boards may fail in many ways, causing partial or complete failure of electronic equipment. PCB is an actual non-conductive board on which circuits are laid and then stacked. PCBA is a PCB with all electronic components installed. If not handled properly, PCB It is easy to damage. Since PCB is the basis of electronic equipment, it is important to know when it is broken and needs to be replaced.

1 If the electronic components are installed, please test the PCB with the power on. The motherboard is an example of PCBA. If it is a motherboard, you will know that it is bad if there is no light on or the sound is heard soon after booting. This test is applicable For any PCB with built-in similar optical chip factory and sound testing functions.

2 If it is present, please remove all power supplies from the PCB. If there are any electronic components, you can also remove them by clamping the connecting wires with a wire cutter and pulling them away from the PCB circuit board. Something that needs to be cut.

3 Look for scratches, burn marks or wrong solder. These are obvious signs that the board is at least partly bad and requires professional work or replacement. The scratches will expose and damage the copper connections under the laminate. Additional solder will Causes a short circuit, which is an unnecessary connection and affects other connections. If there are any of these things, please do not continue to test, doing so may cause injury.