Search WeChatTechnical Training The Mitsubishi FX2N PLC indicator light PR0G is flashing, the input and output signal indicators are off, and the parameters set on the touch screen have disappeared. Research shows that PROG indicates a program error. After retrieving the program on the computer, everything appears fine. Replacing it with another PLC of the … Read more
Over 60,000 friends have followed the Industrial Control WeChat platform: Technical sharing, Learning exchange, Industrial control videos Basic Mnemonics for Circuit Board Repair A typical circuit board is composed of millions of circuits. The appearance of components often changes; recognizing characters is key. Resistors and capacitors are the most common; damage is also very prevalent. … Read more
Summary of Circuit Board Repair Techniques Fault Characteristics and Repair of Capacitor Damage in Engineering Circuit Boards Capacitor damage causes the highest rate of failures in electronic devices, with the failure of electrolytic capacitors being the most common. Capacitor damage manifests as: 1. Reduced capacitance; 2. Complete loss of capacitance; 3. Leakage; 4. Short circuit. … Read more
Chapter 25: Answers to Common Questions About Digital Multimeters The digital multimeter is the most basic and indispensable tool for electrical engineers and technicians. In the field, due to various factors such as testing environment, electrical atmosphere, tested equipment, and signal type, users often encounter significant deviations in test results or even damage to the … Read more
1. Correct Use of Multimeter To correctly use a multimeter, familiarize yourself with the dial before use. Adjust the two zero position regulators gently. Choose the correct terminal, and insert the red and black probes into the correct holes. Rotate the switch to the correct gear. Choose the appropriate range for accurate measurements. Look at … Read more
Click the blue text to follow us Let me tell you, back in the day when there were no test diagrams, repairing a motherboard was like looking for a needle in a haystack. Now, with test diagrams, repair efficiency has at least tripled! However, I see many beginners looking at test diagrams as if they … Read more
Click on the “Public Account” above to get the latest news! The touch screen is a device that integrates display and touch control. Because the touch system serves as a bridge for human-computer interaction and is widely contacted by humans, and since it is primarily made of glass, it is relatively fragile, resulting in a … Read more
1 Determine Whether a Circuit or Device is Live The digital AC voltage range is very sensitive, capable of displaying even the smallest induced voltages. Based on this characteristic, it can be used as a test pen. The method is as follows: set the multimeter to AC20V, keep the black probe unconnected, and touch the … Read more
How to Repair a Circuit Board? Today’s Topic Secret Techniques The only unbreakable skill in the world is speed. Specially gifted 300-character aphorism Please treasure it. —— M. Gong A regular circuit board is composed of millions Recognizing the appearance of components is key Resistors and capacitors are the most common failures Resistor values can … Read more
Problem Overview An example of a network issue where a computer client, after connecting to a wireless network AP, cannot log in to the application process. Problem Phenomenon After entering the username and password, the following error is returned: Problem Localization From the error message, it can be seen that the login failed (connection failed. … Read more