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Burnt Cobba
12-05-2002, 15:10
Pls anyone can help me or give information how to effectively use and troubleshoot nokias with this application? Especially to troubleshoot the nightmare RF components.

Thanks for your time and patience mates
br
al

willy
12-05-2002, 18:27
Burnt Cobba,

nightmare ? no ,,,,,

NOKIA has wintesla , and it powerful for you to measure logic and RF part, like wintesla can set phone into local mode, and set on stay at some CH , and for RF burst mode ....

first, you need have a some test tools !
and ,,, what point you need to know ?

Willy


Originally posted by Burnt Cobba
Pls anyone can help me or give information how to effectively use and troubleshoot nokias with this application? Especially to troubleshoot the nightmare RF components.

Thanks for your time and patience mates
br
al

Burnt Cobba
12-05-2002, 21:52
thanks Willy for your quick answer first of all mate.

actually the hardest thing for me on nokias DCT-3 that is (DCT-4 i am not referring to these for now) is to have a clear picture what part is damaged. The parts are various and to test the mall is quite time consuming .. and sometimes you think you fixed it and yet it turns out that it is temporarily fixed cause after some days or horus we get back to step one.

This is mainly after i have changed PA and ant switch or reflowed , reballed Cobba , Hagar and CCONT.... still no network is found or else network goes up for some seconds then it goes off.

According to the service manual by watching the waveform and thus the salient points the trouble can be easily spotted.

My trouble still remains however and i am left with these problems maybe you can help mate:

1. Knowledge on how to work with Wintesla. Some tricks of the trade to use in this application.
2. Secondly are the parts that i cant find anywhere such as the B200 which is a fundamental part of the phone. Al lspare parts fro mother phones are now very low.

If you can guide me fro mhere you ll make my life a better state and start to like nokia when i get one with RF.

thansk a lot mate and *** bless you
br
al

willy
12-05-2002, 22:11
Burnt Cobba,

1: if me, i use test jig, and RF tester for generator a signal to PCB, and use oscilloscope to test some VTX, VRX Vxx and TXC and TXP and low band in RF part , and run wintesla, to first to check at RSSI level , and use wintesla to set RF control RX , burst mode, and start to measure IP/QP from Hager out ! also you can check TX IP/QP from COBBA to Hager, ofcasue, you have to use wintesla to set TX at RF control too , and also check TXDECT, and ...........

then you also can make RX calibration , TX power adjust, energy calibration too !

2: for 3310 B200 this sleep clock,, i will check at C220, both side ,and more imortant, to check that wave, and level of Vp-p !

to be continue !

willy


Originally posted by Burnt Cobba

1. Knowledge on how to work with Wintesla. Some tricks of the trade to use in this application.
2. Secondly are the parts that i cant find anywhere such as the B200 which is a fundamental part of the phone. Al lspare parts fro mother phones are now very low.

If you can guide me fro mhere you ll make my life a better state and start to like nokia when i get one with RF.

thansk a lot mate and *** bless you
br
al

Burnt Cobba
12-05-2002, 23:06
well i have to get an oscilloscope then no other cheaper way out.

you seem to be very experienced willy

Pls can i ask you then what can be wrong in such situations :

1. No provider found (not even manual search). Sometimes it just gives no network found within 15 seconds and in some cases it goes on forever. I cant find out what is wrong in these 2 cases.
( i changed ant switch , Pa and even reballed Cobba and hagar and CCONT)


2. Only 1 provider is found and works ok on that provider. Meanwhile the other provider is as if it does not exist. (Ant switch i changed and PA too)

thanks
al

pez8210
12-05-2002, 23:54
@Willy

I´m very interested in purchase Nolia Test Jigs for Nsm-3 and Nhm-5, where can I found them? and How much?

Thanks in advance

Scaramouche
12-06-2002, 01:34
Burnt Cobba... You will need a RF signal generator / spectrum analsyer and they really cost big bucks!!!!!!

willy
12-06-2002, 08:30
pez8210

http://forum.gsmhosting.com/vbb/forumdisplay.php?s=&forumid=113

Willy

afyf
12-16-2002, 07:45
Dear willy
Could you please tell me where can I get wintesla working software?
And please explain me one thing?
Nokia 8210 when switch on the phone it is working okay get networks but after 2 or 4 seconds it is reset automatically power off again power on repeatedly like that.
Please Advice

Thanks & Best regards
afyf

themobileking
12-16-2002, 07:57
@afyf

Check the battery....
otherwise the PA is short ..change it and solve your problem.

willy
12-16-2002, 18:32
afyf,

1: FULL working wintesla,, you need PKD-1!
2:try remove SIMCARD, and make a call ,, see it off/auto restart ?
if yes,,, after you replac PA, you might check VTX from CCONT,,

Willy

Originally posted by afyf
Dear willy
Could you please tell me where can I get wintesla working software?
And please explain me one thing?
Nokia 8210 when switch on the phone it is working okay get networks but after 2 or 4 seconds it is reset automatically power off again power on repeatedly like that.
Please Advice

Thanks & Best regards
afyf

irawan6880
12-18-2002, 17:39
to Burnt Cobba,
I have trouble like No.2 try to search manual only 1 or 2 provider try to change 26 MHz crystal is work for me, and any body know I flash 3310 or 8210 with rollis before flashing is ok but after flashing no network or need a long time to find a network and after that I must change 26 MHz crystal is ok so I want to know what the real reason ? ( willy can you answer, please?? )
regards,
Irawan

Mondeo_man
12-18-2002, 18:24
hi,

For all people who try to fix RF part on phone, if you don't have minimum hardware you can forget about fixing RF part on any phone.

what you need is:
1) test JIG and cables
2) service manuals, service sw and dongle (Wintesla + PKD-1)
3) GSM tester 900/1800/1900 Mhz
4) Osciloscope minimum 100 Mhz, other tools for check V, R, C
5) Spectrum analizer this can be optional for beginers.
6) Tools for solder/desolder....
7) Components...

If you don't have these you can forget about any repairing and tunning mobile phones. You will try to replace components by guessing and some time phone will have Rx/Tx but in most case that is not ok. It is possible that Tx level is to Low or to High because something eles is damaged also and you can't check until you have an GSM tester, and of course phone is not tunned on RX/TX.

From my experinence it is esential to read few times service manual and also Serv Buletins wich will provide valuable information:
- for example for different Hw and revision component it is not possible to exchange with other component. see 3210, 3310...
- After every replacing of RF component you must tune that phone realign RX, TX levels in phone other way phone will look that is work but is not working properly and wil consume battery and lose signal unexpectedly...
- An advice from internet will not work 90% because you don't now what's wrong in you'r phone until you checked properly with special tools.

It is much better to try to do this repair profesionally becasue you can also have some problems with the law & manufacture of that phone.

Imagine that you are "repaired" an phone for an customer wich will will go with that phone to be checked on GSM Tester because is not working properly or because he has some head problems and on that will result that the phone radiate at higher power then normal.
What are you doing if he or insurance company will sue you health damage and manuafacturer of that phone for bad repairing and destroy his image ?

you and you'r fammily will lose .... for sure...

good luck.

willy
12-18-2002, 18:24
irawan6880

me,,, after write full flash,, i will calibration phone RSSI
becasue eeprom inside detail has AGC AFC and RF all level store in !

Willy


Originally posted by irawan6880
to Burnt Cobba,
I have trouble like No.2 try to search manual only 1 or 2 provider try to change 26 MHz crystal is work for me, and any body know I flash 3310 or 8210 with rollis before flashing is ok but after flashing no network or need a long time to find a network and after that I must change 26 MHz crystal is ok so I want to know what the real reason ? ( willy can you answer, please?? )
regards,
Irawan

afyf
01-02-2003, 14:34
Dear friends
Wish your very happy new year.
I have installed wintesla 6.03 but cannot read any phone.
When I open NSE-8 or 9 getting Error “ failed to initialise functionality medial” like that.
Please some one explain me how to read 3210 or other mobile through wintesla 6.03

Thanks & Best regards
afyf

debeliamark
05-05-2005, 11:33
@Willy
Where must to be searched bad Power/Time template in DCT3 ?
I have here look like working well 3310 /from a friend/ with bad first front of burst pulse / mean front come in advance / and phone work /mean network/ not stable ...
WinTesla can change values for level, but for time shifting ...

WBR, DebeliaMark, BG