3310 signal level jumping up to full and down to zero - GSM-Forum

uu1dx · 10-01-2002, 22:10

Hi all, I got 3310 with a problem like in Ericsson 1018 etc :-)
network level is jumping up'n'down, it finds network and losing it again. what can I do with this?

P.S. When it get into network, it is able to make a call at 10-20% of cases and power output is OK.

hyper_wamir · 10-02-2002, 01:51

uu1dx,

i have the same prob with a 33 b4
reflow cobba, hagar..
or to be sure use witesla first to check rx tx...
then decide what to do next...

br
wamir

fiZ · 10-02-2002, 11:25

how with wintesla can i check tx and rx?

Keke · 10-02-2002, 17:01

100 % pa or antena swicth

Goodluck

Jackmaxo · 10-06-2002, 22:58

Hi,
3310 signal problems is afamous problem, but plz view old posts, all is there....
Good luck

kenwood · 10-08-2002, 14:49

hý members you can change to cobba ýc and aftercalculatýng nk calculator work %100

good work

kenwood

Black-Axe · 10-10-2002, 18:33

Replace B200 it works 100%, believe me

jero · 10-11-2002, 16:09

look my friends..
there can not be the exact one solutions for these kind of problems..this problem is not only for 3310..it can be for all the mobile phones..But firstly the thing that you should do to be sure that software is fixed..Then for hardware,look if the pcb is clean or not.and then you are sure that rx is fine..look for tx fault...Before changing anything ALL SUPPLY VOLTAGES AND SYSTEM CLOCK / SLEEP CLOCK should be checked.Check the caps.and resistors around the uBGA chips and pa..mostly the faults are:rf pwr amp may be overloaded,pins of antenna switch should be checked because the base of this component is made by ceramic and can be broken easily.Then try phone with two band..(900-1800)and look if one of these are out of order the filters of these bands should be checked.And also you should follow the rf diagrams..dont forget this;firstly check the software before opening pcb..then be sure all the line and components are fine before changing or reballing uBGA chips..I know that this info is not enough but the summary is almost like this.thanks.....
__jero__

10-01-2002, 22:10	#1 (permalink)
uu1dx Freak Poster Join Date: Dec 2001 Location: Ukraine, Simferopol Age: 53 Posts: 429 Member: 7993 Status: Offline Thanks Meter: 40	3310 signal level jumping up to full and down to zero Hi all, I got 3310 with a problem like in Ericsson 1018 etc :-) network level is jumping up'n'down, it finds network and losing it again. what can I do with this? P.S. When it get into network, it is able to make a call at 10-20% of cases and power output is OK.

10-08-2002, 14:49	#6 (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 uu1dx hý members you can change to cobba ýc and aftercalculatýng nk calculator work %100 good work kenwood

10-11-2002, 16:09	#8 (permalink)
jero Freak Poster Join Date: Aug 2002 Location: __inside__ Age: 42 Posts: 102 Member: 14792 Status: Offline Thanks Meter: 1	look my friends.. there can not be the exact one solutions for these kind of problems..this problem is not only for 3310..it can be for all the mobile phones..But firstly the thing that you should do to be sure that software is fixed..Then for hardware,look if the pcb is clean or not.and then you are sure that rx is fine..look for tx fault...Before changing anything ALL SUPPLY VOLTAGES AND SYSTEM CLOCK / SLEEP CLOCK should be checked.Check the caps.and resistors around the uBGA chips and pa..mostly the faults are:rf pwr amp may be overloaded,pins of antenna switch should be checked because the base of this component is made by ceramic and can be broken easily.Then try phone with two band..(900-1800)and look if one of these are out of order the filters of these bands should be checked.And also you should follow the rf diagrams..dont forget this;firstly check the software before opening pcb..then be sure all the line and components are fine before changing or reballing uBGA chips..I know that this info is not enough but the summary is almost like this.thanks..... __jero__ Last edited by jero; 10-12-2002 at 21:28.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
thread	Thread Starter	Forum	Replies	Last Post
No audio fix for T616 to T610 and T610 to T616 - FOUND	merwin	Sony Ericsson	19	09-11-2006 21:04
Need gdfs file to convert T610 to T630 and T630 to T610	mayer	Twisterflasher	4	10-12-2005 13:40

10-02-2002, 01:51	#2 (permalink)
hyper_wamir Freak Poster Join Date: Feb 2002 Location: davao, philippines Age: 43 Posts: 247 Member: 9398 Status: Offline Thanks Meter: 1	uu1dx, i have the same prob with a 33 b4 reflow cobba, hagar.. or to be sure use witesla first to check rx tx... then decide what to do next... br wamir

10-02-2002, 11:25	#3 (permalink)
fiZ Registered User Join Date: Feb 2002 Location: nokia Age: 49 Posts: 204 Member: 9626 Status: Offline Thanks Meter: 0	how with wintesla can i check tx and rx?

10-02-2002, 17:01	#4 (permalink)
Keke No Life Poster Join Date: Jun 2002 Location: CT SA Age: 52 Posts: 1,387 Member: 12733 Status: Offline Thanks Meter: 26	100 % pa or antena swicth Goodluck

10-06-2002, 22:58	#5 (permalink)
Jackmaxo Freak Poster Join Date: Dec 2001 Location: Earth Posts: 238 Member: 7934 Status: Offline Thanks Meter: 0	Hi, 3310 signal problems is afamous problem, but plz view old posts, all is there.... Good luck

10-10-2002, 18:33	#7 (permalink)
Black-Axe Freak Poster Join Date: Jun 2002 Location: North Pole Posts: 181 Member: 12869 Status: Offline Thanks Meter: 3	Replace B200 it works 100%, believe me