Hướng dẫn kiểm tra sửa chữa tivi sam sung nháy đèn đỏ không hình, không tiếng

Hello everyone. Today I will show you how to check a Samsung TV model This is the 46EH5300RXXV I will plug in the power supply to see if there is a red light There is a red light here, but when I turn on the power supply, there is only a blinking red light The screen is not running. Now I will open the TV and check it out Wait a minute, I will turn on the TV This is the first time I have used this TV, it has a waterproof sticker This is the 46EH5300RXXV I will use this TV a lot because it is very dusty For Samsung TVs, when I turn on the main power supply, all power supplies will turn on Now I will plug in the power supply to see if the TV screen is running The TV screen is running, all power supplies are running When I plug in the power supply, the TV screen is not running Now I will plug in the power supply to see if there is a red light The TV screen is running, all power supplies are running Now I will plug in the power supply to see if the TV screen is running The TV screen is running, all power supplies are running power supply of this AC power supply is 2.468v, the AC power supply of this AC power supply is 2.468v, the AC Ok, 4A is passed Now I check the current of the previous power supply And now I have to Focus on the next power supply like this and this DC power supply Now I have to check and measure if there is any short circuit You can check the current of the previous power supply Let's see if there is any short circuit OK I guess there is a diode What diode is this? The source of the next power supply is this one This one has a DC power supply along with the diode, I thought it was short, but it's not No, it's not This is the diode The power supply is 13V In general, the diodes at the beginning of the power supply are not short And usually I see that the diodes are all short in this area IC area DC power supply Now I measure The current of the two capacitors is still low Turn it on and turn it off Ok, 4A is passed Now you have to Remove this protective tape This protective tape To protect against heat Remove the protective tape of this 9-pin IC 9-pin is the next power supply For a Samsung TV like this I think this is the case, if you check it, you will know The next power supply is broken The previous power supply and the power supply are running normally So now you just have to measure and check the current of the next power supply This is normal for you to collect some power supplies After you have cleaned the glue I will do some basic operations to measure the current in this IC I will check the current of this IC I will measure the current of this IC I will check the current of this IC power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power of the power