FONA headset question

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billf
 
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FONA headset question

Post by billf »

I have a FONA ( PRODUCT ID: 1946 ) and I am just starting to test it ( I don't have my SIM card yet ). I am running the FONAtest sketch. Most of the first (non-cellular) commands work fine (indicating that Arduino Uno and the FONA are wired up correctly), but when I play tones ( command T ), I only hear the tone in one side of the headset ( I can hear the tone in the side without the microphone). Volume is set to 100%. I have the same problem when I listen to FM radio using the FONA and headset.

When I pull the headset out gradually, I can hear audio in both ears, so it doesn't seem to be an issue with the headphones. The problem is repeatable - when I push the headset plug all the way in again, I lose the audio on the side of the headsets with the mic.

Here's my thought: I'm guessing that the solder joint on the headset receiver closest to the SIM800L module (when viewed from the top of the card) is not making a connection.

Should I attempt to re-solder this connection OR do you want me to send the FONA back so you can do failure analysis on it?

Thanks,

Bill

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billf
 
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Re: FONA headset question

Post by billf »

Additional information: Both sides of the headphone work when I press down on the headset receiver box that is soldered to the FONA board, supporting my theory that the solder joint is defective.

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Franklin97355
 
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Re: FONA headset question

Post by Franklin97355 »

Could you post clear pictures of your board?

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billf
 
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Re: FONA headset question

Post by billf »

Here are some pictures - I hope they are clear enough.
Attachments
FONA p3 with arrow.jpg
FONA p3 with arrow.jpg (379.88 KiB) Viewed 287 times
Last edited by billf on Thu Aug 28, 2014 5:45 pm, edited 1 time in total.

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billf
 
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Re: FONA headset question

Post by billf »

So, my question is:

Should I attempt to re-solder this connection OR do you want me to send the FONA back so you can do failure analysis on it?

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Franklin97355
 
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Re: FONA headset question

Post by Franklin97355 »

If you feel your skills are up to it I don't see why you shouldn't give it a try. Just make sure you get in and out without touching anything else in the process.

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