I haven't shared anything with you for a long time. Since many people think that plasma TV is difficult, I want to share it with you. We don't need a deep theory, just fix it with the most common tools. The master skipped.
Conductive slip rings are one of the most popular types of electrical connectors. They consist of an insulating sleeve enclosing two metal contacts, with a small gap between them. When current is applied to the ring, it creates resistance between the contacts, which can be used to form a continuous circuit. They can be used in a wide range of applications, such as medical equipment, robotics, aerospace systems, and more. The construction of a conductive slip ring typically consists of two rotors (or rings), with each one containing a number of stationary contacts. When the rings rotate, the contacts move past each other and create an electrical connection.
In today's increasingly electronic world, the need for efficient and reliable power transmission is more important than ever. That's why more and more businesses are turning to slip rings as a means of transmitting power in a variety of applications. Slip rings are electrical connectors that allow current to flow continuously through a rotating assembly, making them ideal for use in devices that require uninterrupted power transmission, such as motors, generators, and wind turbines.
Oubaibo is a leading manufacturer and supplier of conductive slip rings, slip ring power connectors, and other related products. With years of experience in the industry, our products are known for their quality and durability. We offer a wide range of products to meet the needs of our customers, including standard slip rings, high voltage slip rings, military-grade slip rings, and many others.
Conductive Slip Ring,Slip Ring Power Connector,Electrical Slip Ring Assembly,Slip Ring Design Dongguan Oubaibo Technology Co., Ltd. , https://www.sliproubo.com
There are now three 50-inch Samsung plasmas on the hands, all of which are bursting on the upper block of the buffer board. The buffer board number is LJ41-05121A.
The phenomenon is very obvious. Look closely at the 3407f to blow up a small hole. The fault phenomenon is that the Y board protection does not give a black screen for power supply. Lose the floating 124v voltage, while the indicator light is on, the heat sink has no temperature.
The characteristic of plasma TV is that the so-called difficulty is to work in high voltage, high current state, there are multiple sets of voltage superimposed. In this case, we must grasp this point tightly, the most direct reflection is of course temperature. We don't want to have a deep theory, and we can basically get rid of it by hand. In addition, as I said in the previous post, you can not load, but you must not touch the bad, otherwise you have to pay the price because of the high voltage state of the work. This is what I repeatedly emphasized to my little apprentice: patience. This is the only difference from other TVs, I think.
Below I will introduce the experience of successful repair from this perspective:
Models with such a buffer plate are damaged on the upper buffer plate, and the lower buffer plate is good. Therefore, it has accumulated a lot of buffer boards for a long time, haha. We will use the four integrated blocks on the following buffer board to repair the four upper buffer boards.
1. Remove the damaged integrated block of the upper buffer board. Note that some are blown up. Obviously, some are short circuits and do not show any. You must use a multimeter to determine which one is good. I think everyone is very clear about how to measure, otherwise it will be changed. Ok, it’s not worth the candle. Then use the nail to remove the glue, use the blade to cut all the legs (note all), pay attention to the direction of the lower knife parallel to the block, or the side will hurt the board, scrapped. Then use an electric iron to heat the scraped manifold from the reverse side. Get it in a few minutes.
2. Then use the soldering iron to clean out any remaining soldered solder on the board, including the residual solder from the heat sink. Otherwise, the new integrated block will not be flat and clean for use.
3, no hot air gun, too expensive, we on the gas stove, pack you faster than the hot air gun! Household gas stoves generally have several stoves, we use the smallest one! Sprinkle the rosin powder on the upper part of the lower baffle plate to observe the temperature, then insert the needle into the notch, do not use a knife or other tools, because we want to use it, to maintain the shape of its legs, Can't come hard. Then you can bake, bake the opposite side, and when the rosin melts, you can gently shake it. Be sure to be patient and keep the prototype. It will be done in one minute.
The only thing left is to clean up the glue, to be light, and to keep the shape.
4, correct, take a little more time, to ensure that all the legs are in position, there is a margin of adjustment before welding, no side is difficult.
The only thing left is to solder, use what you are best at drag welding, point to point, anyway, it will be welded.
5, check, if the power supply is infinite infinity to the floating ground, reverse 8 ohms or so, you will succeed, before you go on the machine, don't forget to weld the reverse heat sink from the reverse side, the welding method is to pour from the front Pine perfume, heated with 50 watts of electric iron, waiting for the sound of water stains, watching other small holes have responded, just fine.
6, after the machine is confirmed again 124v no short circuit, boot.
After burning the machine for 24 hours, I used the hot plastic to seal the glue, which is convenient and quick.
In this circle, I promise that you have "patience" and "chicken". Because one link is wrong, the previous work will be abandoned. Because the gap between the legs is very small, this patience is what we need to repair the plasma TV.
If you have any questions during the implementation process, please feel free to contact us and we will continue to communicate. For example, in the process of cleaning the glue, the integrated block must hold a small bird like a hand, can not grasp, to be loose on the hand, because to maintain the shape. I tried to wash with acid, and it was not good to use wine. I didn't learn chemistry at school. Do you know if there is any solution to dissolve it?
