皓辰团队专业维修，品质保障!!!
专业维修爱德万 7351E 万用表，其常见的故障及原因分析如下
故障点：电阻档无法测量
原因分析：电阻挡回路中的连接电阻烧坏，或集成块损坏。
故障点：电压档测量不准确
原因分析：测量元件工作功率不足，产生热效应，导致示值不准。
故障点：电流档无法测量
原因分析：操作不当导致限流电阻和分压电阻烧坏，或放大器故障。
故障点：示值不稳，有跳字现象
原因分析：电路板受潮或漏电，输入回路中存在接触不良或虚焊现象。
Hao Chen team professional maintenance, quality assurance!!
Professional maintenance of Aidwan 7351E multimeter, its common faults and reasons are analyzed as follows
Fault point: Resistance can not be measured
Cause analysis: The connection resistance in the electric block circuit is burned out, or the integrated block is damaged.
Fault point: Voltage measurement is inaccurate
Cause analysis: The working power of the measuring element is insufficient, resulting in thermal effect, resulting in inaccurate indication.
Fault point: Current stop cannot be measured
Cause analysis: Improper operation leads to burning out of current limiting resistance and voltage dividing resistance, or amplifier failure.
Fault point: The indicating value is unstable, and there is a phenomenon of skipping words
Cause analysis: The circuit board is damp or leakage, and there is poor contact or virtual welding in the input loop.
By understanding the common faults of the equipment, you can better maintain and use it to ensure its long-term stable operation. If you can not solve, welcome to contact Hao Chen! Our maintenance team has a wealth of practical experience and professional maintenance process, can provide you with fast, reliable, quality maintenance service!
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