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Tv led lg 42 LM 3400 does not reach 12 volts to tcom

hcm366
hcm366
hcm366
31
hace 5 años
hace 5 años
Good afternoon friends of the forum I came to the workshop this lg tv with a bridge in the 12v fuse of the tcom and the 12 does not arrive this card goes. I need the diagram or please tell me what to check.
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Franki Lobaina
hace 5 años
hace 5 años
Look in the main near the ldvs connector for a mosfet P smd channel, the source must have 12 volts, when giving power they must pass these 12 volts to the drain, if not replace mosfet, first verify there are no cuts in the line of 12 volt of tcon. Comment results. Greetings and luck
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linogonzalez
linogonzalez
linogonzalez
2.331
hace 5 años

remove the bridge and revive if 12v appear

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hcm366
hcm366
hcm366
31
hace 5 años

If the source reaches 12 volts but these do not pass to the drain that MOSFET can put because it only reads in this x72a

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Franki Lobaina
hace 5 años

It is a P channel mosfet, if you do not have it at the moment, to test you can make a bridge between Source and drain, this after having verified there are no cuts in the tcon. Greetings and luck

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hcm366
hcm366
hcm366
31
hace 5 años

Thank you, friend, after getting another tcom, because the one I had was short, the TV worked, making the bridge you said. If you can recommend some MOSFET p channel to replace, I would appreciate it.

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Franki Lobaina
hace 5 años

I'm glad you solved the most used in this circuit is the WSA3K, but you can use any that is in a main of bone that is used for this purpose. Greetings and luck

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hcm366
hcm366
hcm366
31
hace 5 años

Thanks friend, your help is very great

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Franki Lobaina
hace 5 años

Ok greetings and good luck for other repairs

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