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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 06-04-2005, 11:40   #1 (permalink)
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P900,network problem


Hello!

Phone is used ~20 days,from first day have problems with network.
Didnt damaged,no watter...

After power ON,phone find network and works good first 3-4 mins,then lose network,always searching...
-Antenna and ant. switch checked
-RF IC,PA,13MHz osc changed
-no bandlock

Any advice what to check next,please?
Thanks
Shiljo
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Old 06-06-2005, 19:02   #2 (permalink)
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Quote:
Originally Posted by shiljo
Hello!

Phone is used ~20 days,from first day have problems with network.
Didnt damaged,no watter...

After power ON,phone find network and works good first 3-4 mins,then lose network,always searching...
-Antenna and ant. switch checked
-RF IC,PA,13MHz osc changed
-no bandlock

Any advice what to check next,please?
Thanks
Shiljo

check the PA supply bat +

good luck
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Old 06-06-2005, 19:14   #3 (permalink)
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Donate money to this user
try also to flash phone.
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Old 06-09-2005, 11:08   #4 (permalink)
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Quote:
Originally Posted by tnasoft
check the PA supply bat +

good luck
If PA is bad,there will be "no acces",am I right?
That is not a problem here...thanks for reply!
Regards
Shiljo
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Old 06-09-2005, 11:12   #5 (permalink)
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Quote:
Originally Posted by Pandemonio100
try also to flash phone.
Hello!
Yes,I flashed phone before few mins...nothing changed!
I used latest which I have for SeFighter - P900_pR3D011_sR5B02_cR5A07_bR5D.
I tried with different customization files too,still the same problem.
I think here is hardware problem,but I don't know what to do next
Thanks for reply!
Regards
Shiljo
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Old 06-11-2005, 07:34   #6 (permalink)
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Hi.. maybe this problem is come from Receiving IC, u can try to re-hot or just replace it..
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Old 06-25-2005, 22:53   #7 (permalink)
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hi,friend. Finaly you have heat that cpu.slowly slowly.If you are phone is ok to reply.
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Old 06-27-2005, 08:19   #8 (permalink)
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Quote:
Originally Posted by amtel
hi,friend. Finaly you have heat that cpu.slowly slowly.If you are phone is ok to reply.
Done already...phone disassembled for spare parts
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Old 06-29-2005, 12:52   #9 (permalink)
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Hi. Shi. i had experience with network problem for this model, i try to replace the antenna pad, and it works!! so u can try on this method.. Good Luck
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Old 06-29-2005, 16:49   #10 (permalink)
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Quote:
Originally Posted by mobilesmith
Hi. Shi. i had experience with network problem for this model, i try to replace the antenna pad, and it works!! so u can try on this method.. Good Luck

Well,I am not beginner here...I tried all solutions with this phone,without results...phone is disassemled for spare parts now!
For me,topic closed!
Thanks to all who tried to help!
Regards
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