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LCD TVs - LED
TV without screen lighting
hace 5 años
hace 5 años
Hello friends of the forum I need your help: I have an LG mod TV on my table. 55uf6450 that turns on but does not illuminate the screen and check the LEDs and they are fine
13.721
hace 5 años
Hello dear teacher, maca there is one posted in your payments
https://articulo.mercadolibre.com.mx/MLM-616879577-lg-55uf6450-ua-4k-led-lgp55e-15ul2-power-supply-eay64009301-_JM
13.721
hace 5 años
hace 5 años
Hello, I leave you a video, in the sources LG knows how to be the output voltage for the LEDs, if it is much higher is that the source does not detect current in the LEDs, it may be that the LED series circuit is open ...
Cheers
I climb the voltage chart, I comment that it has 125 volts, here is the box of its source, it is 192 volts, of course it shows that the source does not start
here I upload the picture of the voltages of the connector, or DVR-ON does not arrive or the source inverter does not work
here I upload the picture of the voltages of the connector, or DVR-ON does not arrive or the source inverter does not work
hace 5 años
I have a led tester that measures strips, one by one or all of them, that's why I tell you that they are fine. Cheers!!!
178
hace 5 años
https://www.youtube.com/watch?v=XWhp-2l4auQ&t=284s
Watch this video and try each LED as indicated
178
hace 5 años
My name is really weird ... you say that all LEDs work, you have input voltage to the LEDs, but you have no return. This way we are going well ... then if there is no return voltage and you namesake tell me that all LEDs are good there must be a connector or some open cable
hace 5 años
hace 5 años
My humble opinion .. almost all LG. they present that problem ... it is only to turn on the TV and see if the LG LOGO appears in the background ... you can see it behind the light of a lamp ... it is a sign that you have an open LED ... sometimes with a tester tablets It appears as good but it is not so .. I say it from experience .. with one that is open does not make you return .. in the explanatory video that you have been so cordially sent .. is more than clear .. successful ..
6.594
hace 5 años
hace 5 años
Publish the source number and also the type of led strips ... greetings
With an external source of 3.3 volts, apply this voltage at the marked points, you must connect only the source and lighting. Once this is done, if you continue to have problems, publish the number of ic. led driver ... greetings 
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