Method for repairing short circuit fault of public power supply of LED electronic screen circuit board

February 20, 2024

In circuit board maintenance, if the common power supply short circuit is encountered, the fault is often large, because many devices share the same power supply, and each device using this power supply is suspected of short circuit. If there are not many components on the board, use "hoe earth" After all, the short-circuit point can be found. If there are too many components, whether the "hoe earth" can be hoeed or not depends on luck. A more effective method is recommended here. With this method, you get twice the result with half the effort and often find the fault point quickly.
To have a power supply with adjustable voltage and current, voltage 0-30V, current 0-3A, this power supply is not expensive, about 300 yuan. Adjust the open circuit voltage to the device power supply voltage level, first adjust the current to small, add this voltage to the circuit power supply voltage point such as 5V and 0V end of the 74 series chip, depending on the short circuit level, slowly increase the current, use Touch the device by hand. When you touch a device, the heat is obvious. This is often a damaged component. You can take it off to further measure and confirm. Of course, the voltage during operation must not exceed the working voltage of the device, and can not be reversed, otherwise it will burn other good devices.
Shenzhen Lianshuo Optoelectronics Co., Ltd. is a professional LED display manufacturer integrating R & D, design, production, sales and service. The company's main products include LED display rental series, indoor and outdoor advertising screen series, indoor high-definition small-pitch series, and special-shaped screen LED display products. LED electronic display screens display information, text, pictures, animations and videos in a variety of ways with their rich and varied colors, patterns, real-time dynamic display mode, multimedia effects and powerful visual impact, and become the information dissemination Epoch-making products.

Insulator Hardware

Insulator Hardwares

Insulator hardware for Poleline Hardware refers to the components used to support and insulate electrical conductors on utility poles. Some common insulator hardware used in poleline installations include:

1. Insulators: Insulators are typically made of porcelain, glass, or polymer materials and are used to prevent electrical current from flowing through the pole or other grounded structures. They provide electrical insulation and mechanical support for the conductors.

2. Insulator pins: Insulator pins are used to secure the insulators to the crossarms or other supporting structures. They are usually made of steel or other durable materials and come in various designs to accommodate different types of insulators.

3. Insulator Clevis: Insulator clevis are comprised of multiple insulators connected in series to provide the required electrical insulation for the voltage carried by the conductors. The number and arrangement of insulators in a string depend on the system voltage and other factors.

4. Suspension hardware: Suspension hardware includes various components such as suspension clamps, suspension insulators, and suspension links. These are used to support the weight of the conductors and insulators, ensuring proper tension and alignment.


5. Strain hardware: Strain hardware is used to absorb and distribute the mechanical forces exerted on the conductors due to wind, ice, or other external factors. It includes components such as strain insulators, strain clamps, and dead-end fittings.


6. Crossarm braces: Crossarm braces are used to provide additional support and stability to the crossarms, which hold the insulator strings. They are typically made of steel or other sturdy materials and help to prevent sagging or swaying of the conductors.



Yokelink Insulator Hardware are mainly used in transmission lines. It is used to connect crossarms, thereby joining the crossarms. By joining crossarms together, they are made stronger and more resistant to vibration.They are attached in cross arms of overhead transmission lines for supporting and connecting the crossarms by means other than welding. They join two crossarms or a cross arm with an insulator mounted on it. It is also put into one crossarm for joining cross arms together.
The Insulator cross arm pins have three parts – the crossarm pin base, a crossarm pin body, and the crossarm pinhead. The cross-arm pin base is fitted in an opening of a cross arm.The cross-arm pin body connects the cross arm with another cross arm or a crossarm insulator. The crossarm pinhead is placed on the top end of the cross-arm pin body and holds it into position so that it cannot move outwards.



Insulator Clevis, Post Studs, Pole Top, Forged Pin, Insulator, porcelain, Deadend

Ningbo Yokelink Machinery Co.,Limited , https://www.yokelink.com