Новости PCB - мощная техника восстановления платы PCB

In recent years, автоматизация промышленного оборудования, so the number of industrial control boards in various industries has also increased. после повреждения панели управления, the high cost of replacing the плата PCB(as little as a few thousand yuan, as much as more) Ten thousand or several hundred thousand yuan) has also become a very headache for enterprises. ремонт платы, as an emerging repair industry, также быстро развивается. Most of the damaged плата PCB можно отремонтировать в китае, and it can save 70%-80% of the cost compared with buying a new board, и затрачивается гораздо меньше времени, чем на фиксацию наружной обшивки. The following describes the basic knowledge of circuit board ремонт.

почти все плата PCB repairs do not have drawings and materials, многие люди сомневаются плата PCB repairs. Хотя различные платы очень разные, the same thing is that each circuit board is composed of various integrated blocks, сопротивление, capacitors and It is composed of other components, Таким образом, повреждение платы должно быть вызвано повреждением одной или нескольких частей. на основе вышеперечисленных факторов была разработана концепция обслуживания платы. Circuit board repair is divided into two parts: inspection and repair, в том числе проверять очень важное место. The basic knowledge of repairing each device on the circuit board is tested, пока не найдут и не заменят, ремонтная плата.
Circuit board inspection is the process of finding, выявление и исправление неисправности каждого электронного элемента на платы. На самом деле, the entire inspection process is a thinking process and a test process that provides logical reasoning clues. поэтому, the inspection engineer must gradually accumulate experience and continuously improve the level in the process of circuit board maintenance, тест, and repair.
универсальное электронное оборудование состоит из тысячи компонентов. During maintenance and overhaul, обнаружение проблем с помощью прямых тестов и проверок каждого элемента платы будет очень трудоемким. difficulty. Таким образом, метод контрольной проверки от дефекта к причине неисправности является важным методом проверки и ремонта. Пока панель не засекла проблему, it is easy to repair. ниже подытоживается основная формула ремонта платы, which is convenient and practical.
обычная плата, the circuit combination is tens of millions
The appearance of components changes frequently, and character recognition is the key
Resistance and capacitance are the most common, and damage is also common
The resistance value of the resistance is easy to change, and the capacitance leakage is still leakage
Inductance transformer is a coil, simple test to see the on-off
Diode and triode, measure the positive and negative of the PN junction
MOS tube and thyristor, trigger test is the key
All of the above are discrete components, integrated circuits for many years
The analog device has an operational amplifier, and the virtual short and virtual terminals are used to judge
Optocoupler isolates the front and rear stages, and the damage is tens of millions
Digital devices are often seen, before 40 and 74 marks
There is also an analog-to-digital converter, which is very laborious to test
Don't forget ROM and CPLD, programming depends on the programmer
CPU, монолитная машина, timing judgment logic instrument
Various sensors, the probability of damage ranks first

The above is the introduction of плата PCB maintenance. Ipcb is also provided to PCB manufacturers and PCB - производство техника