46-inch TCL LCD TV screen edge board repair example - appliance repair - Huaqiang electronic network

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

0603 Blu-ray factory direct sales

Huaqiang Square crystal original spot stock

At the beginning of this year, one user said that the TV suddenly had a problem. When the time was good or bad, the door-to-door inspection machine was playing normally, but as long as the TV was moved, the image flower or the horizontal and vertical lines [the sound always has], the shutdown and then the opening sometimes On the screen or cross line, if you move the TV at this time, it will sometimes turn into a normal image. I thought that there might be a problem of poor contact between the logic board or the screen line.
Pulling back to the store and replacing the logic board has the same result. It is strange that the contact is poor. Is it a problem on the motherboard, the TV is tiled, and the image is not changed according to the motherboard. However, there is a problem with the twisted frame. Is the edge of the screen bad, and the eight pieces are unpacked, and after the static electricity is removed, the image is observed by the COF cable on the side panel one by one. When the first block on the right is pressed, the image problem appears. Repeatedly determine whether the COF screen bonding end or the edge board bonding end problem, [the screen is poorly lined up and can only be taken out to find the screen screen of the screen 280 ocean,] finally determined that the side board is bad, since Find the problem, practice your own hands [in case you can't fix it, you can take out the pressure screen, it's the same price, so there is no worries] The hot pressing of the iron wire with hot iron wire does not solve the problem, so carefully scrape off a little line of patent leather. Apply with a rosin solution, a soldering iron, a magnifying glass, and several times to succeed. At that time, the joy of joy was beyond words, and it was quite a sense of accomplishment.
In the future, if you encounter this kind of situation, it is not necessarily a screen problem. If you check carefully and then come to a conclusion, you may be in poor contact. You can fix it yourself, so let's share it with you today. I hope everyone who is ready to fly will not fly.