Lg 32ln575s without image, only sound.
The image is not sure if it is there, the backlight I think is the problem, there is no voltage between the positive and negative power of the same, and between chassis and positive there is much more than it should.
It is easy to know if it is backlight. Just by looking at the display since the light is visible, if you do not have a backlight you can check if the display is working when lighting with a flashlight, should you see an image. First let's see what the problem is in order to continue.
I will try to reconnect the antenna cable to check with a flashlight if there is an image, the backlight is already telling you that it does not work.
Look most likely you have some Led open or short in the backlight, mount this circuit for you to try the backlight positions without the need to disassemble the TV, when you assemble it, try it beforehand so that you become familiar with the circuit, always keep in mind the polarity of the diodes because you could break them with this circuit you can try from a Led to a good amount of LEDs. greetings and luck
What circuit do you mean? I think I haven't thanked him for his help, really, thank you very much.
Hi Andrewsman, I have not assembled the tester for the LEDs, since I do not have an electronics store nearby, it could be a short led, open I do not think, because if not, it would not have voltage on the negative (return) of the connector the leds, the sound, really if there is, but when I disassembled it was connected by optical cable to a bar, that's why you can't hear anything now, also connect it with the lg application and tune in correctly, I watch the tv in the mobile, it also caught my attention, that in one of the staples that hold the light diffusers, slight flashes are visible every 2 sec approx
Look, I've been working with these TVs for a few years and 70% or more of those failures are in the Led strips to discard the LEDs you have to measure them.