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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 10-09-2002, 16:39   #1 (permalink)
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Eric T20 T39 no aceess

I have problem with more units with no aceess after an hour.I solve the problem in most cases with rehot the rf area but after 4-5 days comes back with same problem.does anyone have find any solution??
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Old 10-09-2002, 19:44   #2 (permalink)
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hi GSMan...

if you solve the problem for 4-5 the pcb should be the reason.dont worry!if you sure that the pa and diplexer are o.k..
reball the uBGA chips...mostly solder balls of those chips are cold soldered or broken.this is why the problem doesnt show itself for a few days after you rehot the pcb...__jero__
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