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LCD TVs - LED

LG 42LB5500 without image

djmanolo10
hace 5 años
hace 5 años
Hello good night, I am writing you because I have a 42LB5500 led leg tv that turns on the screen LEDs are activated and you can hear but it is not an image, all the source output voltages are ok, I have tried to change the t-plate With and nothing remains the same, I have also proven that using the scart's output to another TV looks everything, how could I know if the screen or the motherboard is wrong? Greetings and thank you!!
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XAMUEL
XAMUEL
XAMUEL
93
hace 5 años

Hello Friend,
I tell you:
Do not change another T-con or video card since you have a problem in the LEDs of the Back Light system and to solve this problem you must disassemble the TV completely to reach the LEDs, you may have one or several bad ones, this Work is very careful and you must have the necessary experience to not break the TV screen and be able to replace the bad diode (s), and for this you must have the diodes available to make the change.
If you are a technician, you will know what to do.
Greetings.

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josejdiaz
josejdiaz
josejdiaz
277
hace 5 años
hace 5 años
friend try another card of the same model or another brand that if 42 inches to discard the damage
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XAMUEL
XAMUEL
XAMUEL
93
hace 5 años

Be careful with this, you just have to make the change for a video or Main board of the same brand and same model, they are not all compatible.
Cheers

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variman
variman
variman
993
hace 5 años
hace 5 años
turn on the leds? your screen is bad
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djmanolo10
hace 5 años

if the led turn on

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gilar
gilar
gilar
6.594
hace 5 años
hace 5 años
To know if you have problems on the display, try the test indicated in this link ... greetings https://www.yoreparo.com/tv/televisores/lcd/preguntas/1554178/pantalla-lg-50-con-back-light-pero-sin-imagen
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djmanolo10
hace 5 años

The procedure is not very clear to me, could you explain it to me in more detail?

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gilar
gilar
gilar
6.594
hace 5 años

Between the display and t-con there are two flexes, disconnect one and prove that the image is correct, if so, do the same process with the other flex, when you connect or disconnect the flexes before you must turn off the screen to not create more problems

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djmanolo10
hace 5 años

because if I release the one on the left and leave the right one, on the left part the screen lights in total white and the left part in black with a couple of white lines,
If I release the right and leave the left because nothing full screen in black, will the screen be?

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gilar
gilar
gilar
6.594
hace 5 años

Short panel (display), there is nothing more to do ... greetings

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