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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 10-31-2002, 22:03   #1 (permalink)
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ericsson t20 no acces

one of my telephone ericssont20s display no acces i cant send or receive what is the problem please
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Old 10-31-2002, 22:30   #2 (permalink)
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first,check ext.antenna, antenna switch,then pa finally two bga chips.
if your problem remains after changing ant.switch and pa,you should reball the both of BGA chips(dsp)which are below by one..hope you succes..__jero__
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Old 11-01-2002, 19:57   #3 (permalink)
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mostly that's becouse of signal ic. on the right side of CPU.
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Old 11-01-2002, 21:31   #4 (permalink)
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No ACCESS mean you have RX but no TX - so you need to check TX line - Antenna, antenna connector, PA and power IC. But it's probably PA problem.
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Old 03-13-2003, 17:23   #5 (permalink)
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Pls Can any1 tell me the equipt for soldering or desoldering or reballing this IC, TX, RX BGA, etc
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Old 03-15-2003, 18:17   #6 (permalink)
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Rewrite e2 then open cover.
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Old 03-15-2003, 20:24   #7 (permalink)
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