|
Welcome to the GSM-Forum forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. Only registered members may post questions, contact other members or search our database of over 8 million posts. Registration is fast, simple and absolutely free so please - Click to REGISTER! If you have any problems with the registration process or your account login, please contact contact us . |
|
Register | FAQ | Donate | Forum Rules | Root any Device | ★iPhone Unlock★ | ★ Direct Codes ★ | Direct Unlock Source |
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. |
| LinkBack | Thread Tools | Display Modes |
09-02-2005, 05:59 | #1 (permalink) |
No Life Poster Join Date: Aug 2005 Age: 45
Posts: 650
Member: 166746 Status: Offline Thanks Meter: 86 | Step by Step-how To remove & replace COBBA / CCONT very useful to beginner... I want everyone to post their input and output in this thread it will help alot of users who are just starting out hardware repairs and having problems: this is the procedure im following to remove & replace compononent(COBBA) and problems im facing: I preheat pcb at around 200-250 with hot air gun I use liquid flux(water element) with my brush I tip the COBBA with the flux and then heat for approx 7 sec's @ 350-380. I pick up with tweezers and place aside -PCB now has excess soldier which are in the shape of balls- I use teh soldiering iron at 300 - 350 to tip the remaining balls off the pcb and then soak the new brush in acetone and clean the part where COBBA was, then I preview the pcb and notice that all tracks are intact (I can see all silver heads on teh pcb in a square shape) time to replace... I use soldiering paste, I apply a little onto a brush then I put some onto the pcb and a little on the COBBA itself, I align it to the markings on the board and use a little heat with gun, around 200 for 5 sec's. Then i increase heat to around 400 and i watch the COBBA lift itself a little, the heating process is done the COBBA is securely fitted to teh pcb. This is what I have learnt in this forum and from peoples advises, Can an experieced user touch up on this or correct the procedure, as i have only 50% success with this method... Please help all beginner users in this forum by adding input and output to this thread, which will eventually become a sticky :> waiting in anticipation cheers |
09-03-2005, 06:21 | #2 (permalink) |
No Life Poster Join Date: Sep 2004 Location: coast Age: 53
Posts: 2,097
Member: 83397 Status: Offline Thanks Meter: 204 | THANKS SILVERAXE for the tutorial but the place i live dont get fluid solder but they have solder balls can u explain how to place the balls on the ic's and the rest of the procedure.thanks |
09-03-2005, 19:44 | #3 (permalink) |
No Life Poster Join Date: Aug 2005 Age: 45
Posts: 650
Member: 166746 Status: Offline Thanks Meter: 86 | first of al, thanks goes out to CPU KILLER, for all the advises and helps to get me from a harcore software tech, to a little of a hardware boy ;> Oh... not forgetting NEO :P @ jamohaki, From what i know when u replacing a new cobba it has the balls already onto the IC, theres is no need to reball a new cobba if replacing it. If you not having access to liquid flux Im not sure what else you can use, Please can one of the experienced users help out here.... BR |
09-03-2005, 20:48 | #4 (permalink) | |
No Life Poster Join Date: Aug 2004 Age: 47
Posts: 966
Member: 76257 Status: Offline Thanks Meter: 77 | Quote:
| |
09-04-2005, 06:58 | #5 (permalink) |
No Life Poster Join Date: Aug 2005 Age: 45
Posts: 650
Member: 166746 Status: Offline Thanks Meter: 86 | HI,1) everytime trying to soldier thin copper insulated wire to leg of IC or end of diode, keeps slipping off.. any pointers?? 2) Im testing 3310 pcb with multimeter, when i put points on positive batt of pcb and negative with otehr cable, its showing continuity, this means there is a short in the board? what todo in this case? BR |
09-05-2005, 08:16 | #7 (permalink) |
No Life Poster Join Date: Aug 2005 Age: 45
Posts: 650
Member: 166746 Status: Offline Thanks Meter: 86 | 1)If one wants to remove a COBBA from a dead board and fit in onto another board will this provess be successful or do steps have to be taken first? 2)what does reballing entail and when is it needed ??? and how is it done. |
07-03-2007, 18:24 | #9 (permalink) |
No Life Poster Join Date: Apr 2006 Location: Fast-Code™ MBKPHONE Ltd Age: 38
Posts: 1,889
Member: 269035 Status: Offline Sonork: 1,618,0786 Thanks Meter: 301 | plz add pic to this thread................. Great job ==================NO ADVERTISING=========================== |
Bookmarks |
| |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Guide: How to Activate SETOOL Step by Step | shahzaadbutt | SETool2 | 66 | 06-15-2023 11:12 |
Step by Step how to Unlock BB5 Phone Using BB5BOX By Raskal | Ron2pet | BB5BOX | 12 | 09-21-2007 09:54 |
How to unlock sanyo & toshiba 3g phones - 803/902/903/904 & Sanyo 801SA STEP BY STEP | FuriouS TeaM | FuriouS II | 9 | 06-10-2006 14:26 |
how to use sagem code reader step by step | kaduna | ARM9 BASED M62 / M62+ | 20 | 06-17-2004 17:29 |
How to remove SP lock R210 step by step | Wind_Wild | VLSI, Conexant, Skyworks and Old Models | 1 | 06-14-2003 22:26 |
|