Tại Sao Tivi Hỏng Nhiều, Người Dùng Khổ Sở Vì Bo mạch Tivi Sam Sung

Hello everyone, welcome to my youtube channel With this video, let's check out a Samsung TV 40H5300R When I plugged it in, I didn't see anything. You are with me to check out a Samsung TV 40H5300R This TV has an internet network Now I will open it and I will go with you To find out the problem This TV is out of power What is the problem? And how to fix it? In the past, I fixed a lot of Samsung TVs But I see In the process of repairing, I found out that the quality of Samsung's cover was designed to be relatively poor The TV often has the phenomenon of The screen of the Samsung TV is less hollow, but on the other hand The cover is very hollow 2nd And some high-end models now I can see that the cover is often very hollow I will plug in the power supply and check First I will check the power supply See if there is a power supply leading to the 2 capacitors 315v When there is 315v, I will measure the output power Losing all output power This is the power supply This power supply is for the backlight I will test the power supply first This power supply is for the backlight This power supply has a power supply Power cord Power supply Power cord For the screen OK To fix this power supply, I have to remove the power supply This power supply looks very bad It has a lot of scratches Let's take a closer look Now I will check the TV First I will measure the 2 capacitors to see if the power supply does not run The power supply is not working This power supply is too bad The quality is too bad I measured 2 capacitors 187.6v This power supply is still running, but the output is a bit bad The output is a bit brown To distinguish this power supply, you have to check which power supply is the front power supply and which power supply is the back power supply OK I will check the front power supply Measure the voltage The power supply is still running The power supply has a voltage line The power supply is running the power supply The power supply wire is a bit broken Why I will try to measure the voltage of the 2.5V AC power supply I will measure the voltage of the 2.5V AC power supply So I will measure the voltage of 50V on PC I will measure the voltage of 50V on PC Is accurate I will connect the capacitor to the front power supply The quality of the circuit is very poor Thank you for watching