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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Sony Ericsson > Sony Ericsson Hardware Repair


Sony Ericsson Hardware Repair Post here your Hardware Repairing Hints or Problems with SonyEricsson and Sony Phones.

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Old 11-06-2001, 12:54   #1 (permalink)
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Post T28 low volume on Mic


When I use my T28 mic the other people hear me very bad, the mic as a really low volume, I'm trying to fix this phone after is fall in the water. <br />The battery as been replaced and all is ok aparently (already update version) but the mic as a realy low volume. <br />Could it be only the mic that needs to be replaced or do I have to replace some other components??

I don't have many experience in repairs and I need to know if the phone as any chance.
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Old 11-06-2001, 20:41   #2 (permalink)
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Hi!<br />Mic 100%. You can test the cover from another phone...
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Old 11-07-2001, 17:28   #3 (permalink)
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Unhappy

I tested the phone with one "hands free kit" and thi Mic is also very low. So the problem is really not the Mic from the Phone. <br />Can someone give me some help how to fix the problem in the phone board (what components should I change) please...thanks
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Old 11-07-2001, 18:21   #4 (permalink)
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Anyway, try with cover from another phone. If result will be the same, try to rehot lower chip...
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Old 11-12-2001, 22:43   #5 (permalink)
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Of course check the lines on PCB. If there is no any other solution try to clean PCB with alcohol and dry it with hot air.<br />Good luck
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Old 11-13-2001, 06:23   #6 (permalink)
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Hi,<br />Try to reflow the MMA ic(multi mode adapter) or DSP ic.Or change the ic.<br />I think is your mic problem or external connector problem better change it.<br />enjoys. <img src="biggrin.gif" border="0"> <img src="biggrin.gif" border="0"> <img src="biggrin.gif" border="0"> <img src="tongue.gif" border="0"> <img src="tongue.gif" border="0"> <img src="tongue.gif" border="0">
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Old 11-19-2001, 15:45   #7 (permalink)
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Problem solved. I've changed the Mic and now its 100% <img src="smile.gif" border="0"> <img src="smile.gif" border="0"> Thanks everyone for the help...

Best Regards
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