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TVs

Lcd Lg 50lb6500

Angel Chango

hace 5 años

Good night friends of the forum I have a lg tv model 50lb6500 that came with the fault that blink at the time of lighting and is dark but if it has sound. In the diagnosis I found 4 diodes that do not light one on each strip so I proceeded to change them all ten LED strips and when checking I have the same fault. Friend of the forum please can you help me with the diagnosis to solve this fault. Thanks friends.

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aleferrari.uy

1.651

hace 5 años

Hi. Check the inverter circuit (power of the LED strips) You will see traffic, mosfet, .. start there.

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Angel Chango

hace 5 años

Thanks friend, good morning.

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ELECTRONICA CIENTIFICO

980

hace 5 años

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hace 5 años

Check the polarity of the LEDs and check again the LEDs that are not lost or some bad connection ... When all this is ok, the start order can be given without the mein plate if the power supplying the LEDs is ok. I should see something 120volts. the led strips being disconnected. another thing the led must be of the same voltage.

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Angel Chango

hace 5 años

Thank you friend for your recommendations I will be informing how I am doing in the diagnosis process.

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Angel Chango

hace 5 años

Good morning friends, thanks for your comments and I resolved the damage of the lighting flashing, the problem of blinking was due to false contacts of the "new LED strips", which I proceeded to bridge the strip A to the strip B and back up the power connectors
Note: measure continuity and check each of the LEDs.
Att.

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