Ericsson T20 NO NETWORK - GSM-Forum

Bemsas · 08-10-2002, 10:13

My Ericsson T20 not find any network.
I change :
1. Antenna switch
2. RF processor
3. DSP
4. Multi-Mode adapter
5. Power supply IC
6. PA
7. Phone reflashed, writed new EEPROM

After this changes, phone is not repaired.

Any solution for repair ?

.::AkhavanGSM::. · 08-11-2002, 14:11

I have the same problem with my t.28 .
Please help us.
thanks LIGHT

george gsm · 08-13-2002, 01:16

hello friends,
change rm009, (hotair 350degree celsius 15-17 sec)
verify antena contact and circuit between antena and antena swich
geo

.::AkhavanGSM::. · 08-13-2002, 17:24

Thanks for your answer .
Where is this rm009 ?
if you mean PA I have changed it b4.
ne other soloution??
thanks LIGHT

Bemsas · 08-13-2002, 18:52

PA ok. Phone not find any network with manual search.

george gsm · 08-14-2002, 22:05

hello gsmlights,
your pa can be damaged. replace it and don't give too much hotair. not all pa demaged it's in shortcircuit
geo

ozcom · 08-16-2002, 19:22

Hello,
I got the same problem with a T20, I have go througt all hardware wise to find out a solution still no network even manually.But finally my surprise it work back normaly after I have try to upgrade it to T29 using Ericsson T20->T29 Flasher.

Cheers
ozcom

george gsm · 08-18-2002, 02:31

hello friends,
sometime must change antena conector. i saw 2 models.
if the pa is not solder good - no network
try to call 112 near radioreceiver and listen sound. how is it?
geo

08-10-2002, 10:13	#1 (permalink)
Bemsas Freak Poster Join Date: Mar 2001 Location: EU Posts: 146 Member: 3847 Status: Offline Thanks Meter: 6	Ericsson T20 NO NETWORK My Ericsson T20 not find any network. I change : 1. Antenna switch 2. RF processor 3. DSP 4. Multi-Mode adapter 5. Power supply IC 6. PA 7. Phone reflashed, writed new EEPROM After this changes, phone is not repaired. Any solution for repair ?

08-16-2002, 19:22	#7 (permalink)
ozcom Freak Poster Join Date: Mar 2002 Posts: 226 Member: 10125 Status: Offline Thanks Meter: 287	You can try this Hello, I got the same problem with a T20, I have go througt all hardware wise to find out a solution still no network even manually.But finally my surprise it work back normaly after I have try to upgrade it to T29 using Ericsson T20->T29 Flasher. Cheers ozcom

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08-11-2002, 14:11	#2 (permalink)
.::AkhavanGSM::. No Life Poster Join Date: Jun 2002 Location: Iran Age: 47 Posts: 1,082 Member: 12724 Status: Offline Thanks Meter: 30	I have the same problem with my t.28 . Please help us. thanks LIGHT

08-13-2002, 01:16	#3 (permalink)
george gsm No Life Poster Join Date: Jul 2002 Location: Bucharest-Romania Age: 51 Posts: 1,160 Member: 14200 Status: Offline Sonork: Sonork id Thanks Meter: 117	hello friends, change rm009, (hotair 350degree celsius 15-17 sec) verify antena contact and circuit between antena and antena swich geo

08-13-2002, 17:24	#4 (permalink)
.::AkhavanGSM::. No Life Poster Join Date: Jun 2002 Location: Iran Age: 47 Posts: 1,082 Member: 12724 Status: Offline Thanks Meter: 30	Thanks for your answer . Where is this rm009 ? if you mean PA I have changed it b4. ne other soloution?? thanks LIGHT

08-13-2002, 18:52	#5 (permalink)
Bemsas Freak Poster Join Date: Mar 2001 Location: EU Posts: 146 Member: 3847 Status: Offline Thanks Meter: 6	PA ok. Phone not find any network with manual search.

08-14-2002, 22:05	#6 (permalink)
george gsm No Life Poster Join Date: Jul 2002 Location: Bucharest-Romania Age: 51 Posts: 1,160 Member: 14200 Status: Offline Sonork: Sonork id Thanks Meter: 117	hello gsmlights, your pa can be damaged. replace it and don't give too much hotair. not all pa demaged it's in shortcircuit geo

08-18-2002, 02:31	#8 (permalink)
george gsm No Life Poster Join Date: Jul 2002 Location: Bucharest-Romania Age: 51 Posts: 1,160 Member: 14200 Status: Offline Sonork: Sonork id Thanks Meter: 117	hello friends, sometime must change antena conector. i saw 2 models. if the pa is not solder good - no network try to call 112 near radioreceiver and listen sound. how is it? geo