GSM Shop  
GSM Shop GSM Shop
GSM-Forum  

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 .

Go Back   GSM-Forum > GSM & CDMA Phones Hardware Repair Area > Hardware Equipments for GSM

Hardware Equipments for GSM All about Hardware Instruments and equipments like Soldering Stations, Hardware Tools, Oscilloscopes , Frequency Counters ..ext.

Reply
 
LinkBack Thread Tools Display Modes
Old 05-06-2017, 22:22   #1 (permalink)
Freak Poster
 
Join Date: Oct 2010
Posts: 120
Member: 1422282
Status: Offline
Thanks Meter: 19
Bga reballing problem


I m having **** problem while reballing chips. Problem is when ever i reball ic it gets stuck in stencile plate. N if i try to remove it then all balls gets destroy. I m really annoyed with this problem . I m using reballing paste for reballing. Anyone can suggest me what should i do?


Sent from my iPad using Tapatalk
  Reply With Quote
Old 05-07-2017, 09:37   #2 (permalink)
orx
Moderator
 
orx's Avatar
 
Join Date: Oct 2012
Location: veneto italy
Age: 52
Posts: 1,104
Member: 1825965
Status: Offline
Thanks Meter: 481
Hi

1- clean well the stencil with isopropilic / propanol (important ! )
2- put the solder past on stencil On a flat surface
3- Bring in the temperature with your hot air and before removing the ICs over a bit of good flux (imortant! )
4-for removing reballed ic use hot air a max speed .

use good reballing paste ...i use Kester paste very good but expensive.

Last edited by orx; 05-07-2017 at 10:00.
  Reply With Quote
Old 05-08-2017, 21:14   #3 (permalink)
Freak Poster
 
Join Date: Aug 2005
Location: Italy
Age: 43
Posts: 108
Member: 168904
Status: Offline
Thanks Meter: 22
Hold the balls directly on the pitches of the ic
  Reply With Quote
Old 05-09-2017, 00:11   #4 (permalink)
Freak Poster
 
Join Date: Oct 2010
Posts: 120
Member: 1422282
Status: Offline
Thanks Meter: 19
Quote:
Originally Posted by fulviospano View Post
Hold the balls directly on the pitches of the ic


You mean premade balls?


Sent from my iPad using Tapatalk
  Reply With Quote
Old 05-10-2017, 17:20   #5 (permalink)
orx
Moderator
 
orx's Avatar
 
Join Date: Oct 2012
Location: veneto italy
Age: 52
Posts: 1,104
Member: 1825965
Status: Offline
Thanks Meter: 481
intends balls already ready to be positioned on Ic .. but this you can try on " big" ic as nand, on small ic for me a waste of time ..for mobile is convenient to use stencil Or you can use if you're very skills at pyramid technique with solder iron ..ceck you tube for this.

balls already ready is used for reballing m.board laptop / notebook
  Reply With Quote
Old 05-10-2017, 20:11   #6 (permalink)
No Life Poster
 
Platijet's Avatar
 
Join Date: Apr 2003
Location: Greece
Age: 41
Posts: 3,342
Member: 26279
Status: Offline
Thanks Meter: 262
Quote:
Originally Posted by orx View Post
Hi
i use Kester paste very good but expensive.
Any trustable reseller?
  Reply With Quote
Old 05-10-2017, 20:24   #7 (permalink)
orx
Moderator
 
orx's Avatar
 
Join Date: Oct 2012
Location: veneto italy
Age: 52
Posts: 1,104
Member: 1825965
Status: Offline
Thanks Meter: 481
online search Digikey .
  Reply With Quote
The Following User Says Thank You to orx For This Useful Post:
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


 



All times are GMT +1. The time now is 14:07.



Powered by Searchlight © 2017 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2017 -
Page generated in 0.33204 seconds with 7 queries

SEO by vBSEO