Question about LG CU400 Cellular Phone

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External Sound Broken

The external speaker in my phone is broken. I'm unable to use a ring tone or the speaker phone. Is there a way to fix this myself or some where I can go to fix it?

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Try hitting the speaker it worked on my u400 i know it sounds stupid but it does work don't hit it to hard tho

Posted on Jun 12, 2008

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Posted on Jan 02, 2017

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1 Answer

Why have i no sound at all


The speaker could be broken. Try a wired or Bluetooth headset.

Mark
Motorola Support

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1 Answer

No sound from speaker but through ear piece I get sound.


Many devices will automatically switch off the large speaker when ear phones are plugged into them. Also there may be a switch or button or prompt on your radio to switch between regular speaker and ear phone jack. Look for that first.
Try connecting and disconnection ear phones while listening to a station and see if the problem is intermittent. If is works sometimes but not every time then it is most likely an internal connection.
You will have to access the inside of the radio to investigate further. Connect a working external music or sound source with speaker wire to the terminals inside the radio that connect to the radio's speaker. If the radio's speaker works with the external sound source then you know it is a bad connection inside your radio. If the radio's speaker does not work with the external sound source then it is most likely a faulty radio speaker. Look closely for a broken solder point or broken/disconnected wire.

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1 Answer

My external speaker will not work


Hi, what causes the phone not to be able to ring out is due to the ringer inside the phone that allows you to hear a ringing tone and can be used as external speaker too.it's bad.

You will need to replace the ringer inside the phone. When replaced phone will start ringing out and you can hear when it rings out.

have a nice day.

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Bad or disconnected external speaker. Not usually an expensive fix at an independant cell phone repair shop.

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1 Answer

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this is a change your system administrator will need to handle, (or your phone tech). There is an option in the under "system options" called internal ring cadence for external callers; this is where you can have the system do a double ring for External and a single ring for internal or vice versa.

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Use your screw driver, open the handset, maybe the speaker wire is broken. Or use multimeter to check the dc resistance of speaker. Generally ,it is 8ohm or 4 ohm.

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I think the internal ringer is a default and cannot be changed, but the external ringer can be changed.e03e2a2.jpg

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1 Answer

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This sounds like you have a defective external speaker. Motorola's are known for that. Just take it back to your service provider. They should be able to install a new speaker right on the spot. Hope this helps!

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