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| Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section. |
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05-21-2003, 22:40
| #1 (permalink) |
| Freak Poster  Join Date: May 2002 Location: none Age: 49
Posts: 208
Member: 11926 Status: Offline Thanks Meter: 0 | help before I suicide (nokia problems on my life) I have all hardware necessary to repair phones, or I think I do, - 100 MHZ osciloscope - quick 850 hot air station - flux - old boards and new components - I don't have test jig (if anyone has made any tes jig please send me picture to my mail ) - rf led My problems are : - 3310 and 8210 wich get's network when it is turned on and after that loses it never getting it - 3310 and 8210 wich get's network and after a long time when I try to make a call it "beeps" and don't let me make the call. - 3310 withou any network at all I need help to repair this phones.. I'm tired of seeing old posts but I get more and more confused. some say PA, other antena switch.. etc... I NEED A WAY TO TEST PHONE AND REPLACE THE BAD PARTS and not try this and this and this and ........... I have wintesla and I know how to enable netmonitor, but I don't know wich tests to do.... can someone teach me ? WILLY is a great guy, and he teachs a lot, I hope you help me if you read this message, .... I 'm getting crazy.... Any help is welcome to my problems.. but please.. always reply with tested experiences and not the "try".... Thks and sorry for the big post. KEEP HELPING Noone0 |
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05-21-2003, 22:47
| #2 (permalink) |
| Freak Poster Join Date: May 2002 Location: none Age: 49
Posts: 208
Member: 11926 Status: Offline Thanks Meter: 0 | I need to know another thing.. I put flux to dessolder all bgas, but I should I remove the solder that stills on the phone board ??? because like on the ccont and cobba places on the phone board there are those littles holes near the bga contacts, and when I take the solder off with the solder iron, they get solder and then, when soldrering again, the bga don't solder well and some parts of the solder goes to that little holes .. how to prevent that ??? thks sorry for this stupid question..... but that's another problem I have Noone0 |
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05-21-2003, 23:01
| #3 (permalink) |
| Freak Poster Join Date: Aug 2001 Location: RO
Posts: 479
Member: 5992 Status: Offline Thanks Meter: 1 | you don`t have tools for proper RF repair... - you need JIGs, spectrum analizer and GSM tester... without proper tools you cant find the damaged component and you will just guessing... RF repair is like this: -phone board in JIG connected to wintesla/phoenix and Tester and set to TX or RX and with Spectrum check the signal path to see what is damaged... -after compomponent is replaced check again and in final calibrate the RX&TX using Tester... |
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05-22-2003, 04:28
| #5 (permalink) | |
| No Life Poster  Join Date: Mar 2000 Location: inside NOKIA phone Age: 58
Posts: 1,677
Member: 1060 Status: Offline Thanks Meter: 10 | Re: help before I suicide (nokia problems on my life) Quote:
first, remove casing , then put 68K ( normal mode as normal battery install ) or 22K ohm ( force to local mode as service bettery insert ) , FROM BSI GND, then put power supply to give 4V to VB+ and gnd, then this way you can make phone power up without casing ! 2th, try to connect Mbus cable from PC com port to phones, then run wintesla ! go RX : measure first , all VRX all supply from CCONT ! once wintesla got detail of that phone, then you go to test menu, and set RSSI reading , it must show -110 (+-) dbm then, you measure that MAD to Hager control R301 (3310) , R205 /R206 ( SENA /SCLK) , if no wave you can see, then MAD is problem ! then go to test Hager to VCO at C558 ( 3310) , or C802 (8210) , then you can see from oscilloscope for around 216hz (CH:60, voltage 3.18V) wave, if you can not see it, try to get one working phone , then make same way to measure it ! if VCO loop is ok, then you go to see R504 ( 3310) , R530 ( 8210) for that RX IP/QP . then check 32.768 for C220 (3310) , C113 ( 8210 ) to check that sleep clock is ok or not ! go TX: meausre all VTX are supply ok ! go wintesla , go to RF control, then set "TX". then use oscilliscope to measure TX QP R546(8210 ) R541/R548 (3310) , you can see that COBBA send wave to Hager ! then go to tune menu , put your "RF LED" on antenna pad , set TX power level from 19 step up to level 5, then you can see that power supply current went up too ! if LED not light up, then you use LED go to L553 at pin 1 (in) and next pin 7 ( out) to see if your LED light or not , if in pin 1 is OK, then pin 7 is OK too, then antenna switch must got problem , if TXP wave is ok, and TXC level is step up too , then pin 1 has no light up on led, then it most PA problem ! Willy | |
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05-22-2003, 12:51
| #7 (permalink) |
| Freak Poster Join Date: May 2002 Location: none Age: 49
Posts: 208
Member: 11926 Status: Offline Thanks Meter: 0 | wow ... hands to work.... anyone has made any test jigs (homemade) who can send me a copy.. like you willy, I read on a forum you made some with the old casings of phones.. can you please send a picture of it to me ? Thks [email protected] |
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05-22-2003, 21:11
| #9 (permalink) |
| No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58
Posts: 1,677
Member: 1060 Status: Offline Thanks Meter: 10 |  about DIY or home made test jig, before i use "old" casing ( B-cover), and remove some part for me to measure RF and bese band side ! also you can contact Guciano , he has some photo from he build test jig, i think it is nice to use it important things, it is how you make thing easy for you to do measure work at phone , i will try to look if i still can fine that "old diy test jig" ! Willy |
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05-23-2003, 01:07
| #11 (permalink) |
| No Life Poster  Join Date: Feb 2002 Location: burning phones
Posts: 1,704
Member: 9700 Status: Offline Thanks Meter: 62 | @willy: your explanation is the better thing that I have readed a long time ago Thanks a lot, now I have good info to learn more about testing phones (I usually change ic's withouth tests)about test jigs, I want schemes too... how can I contact with Guciano? best regards |
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05-23-2003, 13:00
| #13 (permalink) |
| Freak Poster Join Date: Oct 2000 Location: .
Posts: 180
Member: 2415 Status: Offline Thanks Meter: 0 | @ willy: 10x for your support! if you find the pics i'll very much appreciate if you could send them to me, or url to down... @ thecult : If you receive them can you share them with us by uploading to somwhere or sending directly to me? to avoid spamming guciano's mailbox... 10x in advance, bone |
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05-26-2003, 20:13
| #14 (permalink) |
| Freak Poster Join Date: Aug 2001 Location: RO
Posts: 479
Member: 5992 Status: Offline Thanks Meter: 1 | Sorry guys, I try to attach the pictures you requested but look's like it's not possible for me to atach any file-picture... So Willy will atach the pictures after will download from my ftp . L. |
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