some tips for 3310 no network - GSM-Forum

flashman · 10-10-2002, 18:24

Hi,
I have some tips for repairing no network 3310.
I had 3 pieces of 3310 with this sympthoms:
No network, but in search mode - select network you can find any networks.
next one is :
after start phone log to network, but after few seconds no network.

I was fix that by replace BGA amplifier with new one and all working good.

I was all poland models of 3310.

May be my sugesstion can help someone

flashman · 10-10-2002, 18:34

I forgot,
befor you replacing BGY, you should check soft. by some nok. tools, try to recalc. secur. checksums or flash with full (with eep.) and calcul. secur. checksums and locks to eliminate soft. problems.
If your phone log to network and lost network and restart, it is probably soft. problem (wrong checksums)

good luck

kenwood · 10-10-2002, 21:34

hý frýend you can change to cobba ýc and after only nk calculatýng phone ýs good work.

kenwood

b0ba · 10-10-2002, 21:46

Reheating COBBA also helps. Customers drop thier phones in most cases.

gsmsalers · 10-11-2002, 13:34

Hi.
Cobba and hagar,antenna switch is 80% of problemm.

willy · 10-11-2002, 15:55

HI also 26Mhz and VCO , so test CCONT too

willy

flashman · 10-11-2002, 23:55

I have one, change diplexer (was bad) BGY, dualsaw filters , reheat cobba, ccont,hagar,change 26MHz VCO and nothing changed.
Phone can switch on, but can't get on network (soft is ok).
I think it can be in power way to rf parts, but I don't know where I need to meansure voltage (on witch component??).
Thank You!!!!

gsmsalers · 10-12-2002, 01:23

Hi.
Search about no network topic in this forum. There are Willy's good article about it. Good luck

gafyd45 · 10-13-2002, 13:24

Dear you.....

how about 5110 ??? i have same problem like mr flashman how to repair.
best regards,
gafyd45

willy · 10-13-2002, 21:07

Flashman,

rehot or reheat will not help so much !

best way to do , step by step to measure all point you need !

SW :wintesla ( DCT3),phoenix (DCT4)
tester: oscilloscope !

you have to test all power supply from ccont !
then use SW to enable RF control, and go to test "IP/QP" from hager to COBBA !

Willy

Quote:

Originally posted by flashman
I have one, change diplexer (was bad) BGY, dualsaw filters , reheat cobba, ccont,hagar,change 26MHz VCO and nothing changed.
Phone can switch on, but can't get on network (soft is ok).
I think it can be in power way to rf parts, but I don't know where I need to meansure voltage (on witch component??).
Thank You!!!!

farry · 10-13-2002, 21:40

willy
i learned alot by yor prevous posts(thanx man)however one thing is not clear for me ,when u take apart the phones how do u give it a current? i know there r test points but where r they and how do u connect the bare board to the power supply?

br

farry

willy · 10-13-2002, 21:45

Farry,

1: use test jig !
2: if you do not have test jig, then you solder a 10K ohm resistor from BSI pin to GND , and give 4V to Vbatt ! then you power up your phone without battery !

Willy

SE-THAILAND · 10-13-2002, 21:46

hello willy

i have problem with 3310 no net.

phone A : RSSI 110 db .manual search no network.Tx set to level 10 phone turn off

phone B :RSSI 108 db .manual search ok.Tx set to any level not happen but PA not damage

how to solve

best regarde

mr_x4you · 10-13-2002, 21:53

Quote:

Originally posted by farry
willy
i learned alot by yor prevous posts(thanx man)however one thing is not clear for me ,when u take apart the phones how do u give it a current? i know there r test points but where r they and how do u connect the bare board to the power supply?

br

farry

For test points use service manual, as for test interface, this is part of original Nokia equipment, it's a special interface on which you can put a bare board. Interface supplies power and also have a lot of nails that touch test points on which you can get your information.

willy · 10-13-2002, 22:04

Srtrech,

Phone B, use oscilloscope to check Hager to VCO loop ! and see VTX from CCONT, and TXC from COBBA working or not ! then Check PA output level and TXVDET to Hager then Antenna switch !

phone A, check Vbb for Hager and remember have "load " for TX , and test it again ! and reball COBBA ! then see that RX IP/QP !

Willy

ps.
sorry Srtrech , i make mistake for that URL .
I send to you by mail !

10-10-2002, 18:24	#1 (permalink)
flashman Insane Poster Join Date: Mar 2002 Posts: 99 Member: 10015 Status: Offline Thanks Meter: 0	some tips for 3310 no network Hi, I have some tips for repairing no network 3310. I had 3 pieces of 3310 with this sympthoms: No network, but in search mode - select network you can find any networks. next one is : after start phone log to network, but after few seconds no network. I was fix that by replace BGA amplifier with new one and all working good. I was all poland models of 3310. May be my sugesstion can help someone

10-10-2002, 21:34	#3 (permalink)
kenwood No Life Poster Join Date: May 2001 Location: INSIDE MOTOROLA WORLD Age: 54 Posts: 1,053 Member: 4588 Status: Offline Thanks Meter: 45	too flashman hý frýend you can change to cobba ýc and after only nk calculatýng phone ýs good work. kenwood

10-13-2002, 21:40	#11 (permalink)
farry No Life Poster Join Date: Dec 2000 Location: uk Posts: 1,058 Member: 2899 Status: Offline Thanks Meter: 6	hi willy i learned alot by yor prevous posts(thanx man)however one thing is not clear for me ,when u take apart the phones how do u give it a current? i know there r test points but where r they and how do u connect the bare board to the power supply? br farry

10-13-2002, 22:04	#15 (permalink)
willy No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58 Posts: 1,677 Member: 1060 Status: Offline Thanks Meter: 10	Srtrech, Phone B, use oscilloscope to check Hager to VCO loop ! and see VTX from CCONT, and TXC from COBBA working or not ! then Check PA output level and TXVDET to Hager then Antenna switch ! phone A, check Vbb for Hager and remember have "load " for TX , and test it again ! and reball COBBA ! then see that RX IP/QP ! Willy ps. sorry Srtrech , i make mistake for that URL . I send to you by mail ! Last edited by willy; 10-13-2002 at 23:32.

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10-10-2002, 18:34	#2 (permalink)
flashman Insane Poster Join Date: Mar 2002 Posts: 99 Member: 10015 Status: Offline Thanks Meter: 0	I forgot, befor you replacing BGY, you should check soft. by some nok. tools, try to recalc. secur. checksums or flash with full (with eep.) and calcul. secur. checksums and locks to eliminate soft. problems. If your phone log to network and lost network and restart, it is probably soft. problem (wrong checksums) good luck

10-10-2002, 21:46	#4 (permalink)
b0ba No Life Poster Join Date: Oct 2001 Location: No route to host. Age: 44 Posts: 895 Member: 6772 Status: Offline Thanks Meter: 17	Reheating COBBA also helps. Customers drop thier phones in most cases.

10-11-2002, 13:34	#5 (permalink)
gsmsalers No Life Poster Join Date: Apr 2002 Location: Flash Age: 44 Posts: 1,943 Member: 11208 Status: Offline Thanks Meter: 11	Hi. Cobba and hagar,antenna switch is 80% of problemm.

10-11-2002, 15:55	#6 (permalink)
willy No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58 Posts: 1,677 Member: 1060 Status: Offline Thanks Meter: 10	HI also 26Mhz and VCO , so test CCONT too willy

10-11-2002, 23:55	#7 (permalink)
flashman Insane Poster Join Date: Mar 2002 Posts: 99 Member: 10015 Status: Offline Thanks Meter: 0	I have one, change diplexer (was bad) BGY, dualsaw filters , reheat cobba, ccont,hagar,change 26MHz VCO and nothing changed. Phone can switch on, but can't get on network (soft is ok). I think it can be in power way to rf parts, but I don't know where I need to meansure voltage (on witch component??). Thank You!!!!

10-12-2002, 01:23	#8 (permalink)
gsmsalers No Life Poster Join Date: Apr 2002 Location: Flash Age: 44 Posts: 1,943 Member: 11208 Status: Offline Thanks Meter: 11	Hi. Search about no network topic in this forum. There are Willy's good article about it. Good luck

10-13-2002, 13:24	#9 (permalink)
gafyd45 Banned Join Date: Oct 2002 Location: Jl.Mawar merah 5 Blok D30 No.15 Bekasi Indonesia Age: 46 Posts: 44 Member: 16434 Status: Offline Thanks Meter: 0	Dear you..... how about 5110 ??? i have same problem like mr flashman how to repair. best regards, gafyd45

10-13-2002, 21:45	#12 (permalink)
willy No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58 Posts: 1,677 Member: 1060 Status: Offline Thanks Meter: 10	Farry, 1: use test jig ! 2: if you do not have test jig, then you solder a 10K ohm resistor from BSI pin to GND , and give 4V to Vbatt ! then you power up your phone without battery ! Willy

10-13-2002, 21:46	#13 (permalink)
SE-THAILAND No Life Poster Join Date: Mar 2002 Location: khonkean,thailand Posts: 741 Member: 10084 Status: Offline Thanks Meter: 283	hello willy i have problem with 3310 no net. phone A : RSSI 110 db .manual search no network.Tx set to level 10 phone turn off phone B :RSSI 108 db .manual search ok.Tx set to any level not happen but PA not damage how to solve best regarde