How to fix a car dvd with no sound or a car dvd sound is lost while the display is on normally and how to check the sound ic tda 7388 is normal or damaged, it's quite easy, just cel in the normal speaker cable, the voltage is around 6v an, check also the pt7313 ic because the sound is on if from there the bass, treble, etc. don't forget to also check the voltages and in this video it turns out that it was caused because the 5v voltage didn't reach mpeg and it was found that there was a broken L7 state and it was found that there was a smd fet as a 5v voltage switch. the shot is not normal, after changing L to fet, it's finally back to normal and the USB can also play, which previously only output numbers but doesn't work.


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