A few days ago, the guest sent a 50-inch "SElKl" model: SE50FY28 LED LCD TV, the power-on indicator light, no backlight, no picture, no sound. Initially judge the power supply constant current plate (constant current integration) fault. After the cover inspection, it is found that the power supply constant current plate is actually no problem. After detecting the power supply constant current plate by the multimeter, the low-end working voltage is normal at the moment when the "PowER" is pressed. Only the constant current output terminal sees the multimeter "cursor". It is null to about 94V one second. Obviously, at this time, the power supply constant current plate has been protected from the action state, and the author determines that the backlight (back-in type) lamp bead is faulty. Therefore, the treatment of lamp bead replacement is performed by individuals. The difficulty is very large and the risk is very high. It can be said that the heartstring is tight and the battle for success or failure is actual. Now I will share the operation process with the masters with the record of the picture: Because the disassembly of the accessories is found, the screen of the Machine is glued to the outer plastic frame, as shown in Figure 11. If you separate the screen from the border, it may cause unexpectedness; if you do not separate it, it will cause inaccurate alignment when the screen is reset and installed, because the state of the screen alignment cannot be observed at the time of screen embedding, such as alignment. Accurate frame fixing screws will definitely cause the screen to be crushed. In view of this difficult and high-risk operation, the author carefully considers and develops the operation plan. Finally, the author uses practical experience and skillful single operation skills. Finally, the operation of the entire large-screen TV was completed, and it was safe and sound, in order to achieve the perfect success of replacing the light bar on the big screen! See the picture, thank you!
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OPT Cutting Tools Co., Ltd specialize in offering a comprehensive gamut of PCD diamond inserts, all of the products are used to machining for cast iron, non-ferrous materials, high-temp alloys, hardend materials.
PCD grooving that are to your specific width and depth requirements. We possess the ability to grind special groove, chamfer, and form tools. Tolerances of 2 microns are consistently held on our grooving insert`s geometry and edge preparation.
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ABOUT US :
We are specialize in manufacturing PCD diamond tools and Carbide tools. Our major product inclulde PCD Inserts , PCD Reamers , PCD End Mills, PCD Taps, Cabide Inserts,Carbide Drills, Carbide Reams, Taps etc., we also offered customized cutting tools per drawings, and provide package according to customer requirements.
We manufacture a series range of cutting tools for machining of Cast iron, Aluminium alloy and Non-Ferros metal, it is widely used in all major sectors like Automobiles, Engineering, Aerospace, Aviation and 3C industry. Premium quality of raw material is used in the production and strict examination during processing with advanced equipment, so our client are satisfied with our reliable quality and on-time delivery.
Our best selling of cutting tools include PCD Inserts, PCD End Mill, PCD Ball Nose Mill, PCD Reamer, Carbide Taps, Carbide End Mill, Special Form Cutter and many more. For these years we have been made a large forward in the technologies of manufacturing cutting tools. With high quality on performance and price, our product sells well both on domestic and overseas market. And we will always focus on the quality and best service, to make long business relationship.
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We have dedicated team of quality control and precise equipment to keep good and stable performance for our products and processing services.
Grooving Inserts,Grooving Tools,PCD Grooving Tools,PCD Grooving Inserts
OPT Cutting Tools Co., Ltd. , https://www.optdiamondtoolss.com