The circuit board of a water purifier is the core component responsible for controlling the entire system’s operation, including water quality filtration, purification, and display functions. If the circuit board malfunctions, it may cause the water purifier to operate improperly, leading to frequent starts and stops. 1. Functions and Components of the Water Purifier Circuit … Read more
▼ Follow WeChat public account: Engineer Looks at the Sea ▼ Hello everyone, I am Engineer Looks at the Sea, original articles are welcome to like and share! Analyzing, locating, and repairing circuits is a basic task for hardware engineers. Various strange problems always arise on-site, and we need to gradually locate and solve these … Read more
Circuit board repair is a relatively niche technical skill. An experienced repair engineer may need years or even decades of experience and continuous learning to achieve success. This article mainly shares some insights on circuit board repair. A circuit board consists of a circuit board, components, and software. I personally believe that the capabilities of … Read more
1. Faults Caused by Capacitor Damage Capacitor damage is the most common fault in electronic devices, particularly with electrolytic capacitors. Signs of capacitor damage include: reduced capacitance; complete loss of capacitance; leakage; short circuit. Different capacitors serve various roles in a circuit, leading to distinct fault characteristics. In industrial control circuit boards, digital circuits dominate, … Read more
1. Repair Procedure for Burnt IGBT or Fuse on the Circuit Board If the current fuse or IGBT is burnt, do not replace the component immediately. You must confirm that the following other components are in normal condition before replacement; otherwise, the IGBT and fuse may burn out again. 1. Visually check if the current … Read more
Cost Reduction and Efficiency Improvement through Self-Repair of Circuit Boards Recently, the operation area of the rolling operation department at the Anyang base successfully eliminated electrical hazards through self-repair of circuit boards, ensuring the normal operation of various precision equipment control components and saving the company external repair costs. During the annual overhaul of the … Read more
During the repair process of welding machines, we often encounter some difficult issues, and at this time, we will use the oscilloscope. Case:NBC270Gas shielded welding with manual welding The fault phenomenon is that the gun outputs gas and feeds wire normally, but does not melt the wire. After excluding problems with the main control board, … Read more
My family’s Electrolux range hood ES01 has been in use for over ten years, installed together with a custom cabinet. Two years ago, its touch screen malfunctioned, and when I called the manufacturer’s customer service, they said the touch screen was broken and needed to be replaced along with the control box, costing 800 yuan. … Read more
Introduction If you are using a mobile phone, you might have encountered a situation where the memory card is damaged and cannot read the contents on the card. I faced this issue myself. This morning, I found that the TF card installed in my Xshot could not be read, and there were many photos that … Read more
2017, Happy New Year! This Issue Guide: Many mechanics often ask me why the motor won’t start and there’s no response when trying to start the car. When I encounter such issues, I honestly feel reluctant, especially when there are no fault codes. This kind of problem is systemic and involves various aspects of the … Read more