procedure of keypad ic replacement - GSM-Forum

sajidmirza · 10-28-2007, 07:49

hi,i have replaced so many keypad ic's for different models,ic's purchaced from different dealers and replaced in every form.but it is ok in only 2%.sometimes it fails at same time,some fails within 24hrs.does anybody have an correct idea and 100% sucessfull process.masters from gsm please kindly help.as most of members suffer from this problem.

baldev · 10-28-2007, 08:53

As KP ics are small and delicate.Use low air at first then increase as balls starts melting.be quick and use Anti static precuations.

linekbp · 10-28-2007, 09:08

hmm i agree try not to touch the ic use tweezer , it will help and after placing the ic put some liquid flex under it , and reflow it a bit

10-28-2007, 07:49	#1 (permalink)
sajidmirza No Life Poster Join Date: Apr 2006 Location: INDIA Age: 50 Posts: 736 Member: 256461 Status: Offline Sonork: 100.1608049 Thanks Meter: 90	procedure of keypad ic replacement hi,i have replaced so many keypad ic's for different models,ic's purchaced from different dealers and replaced in every form.but it is ok in only 2%.sometimes it fails at same time,some fails within 24hrs.does anybody have an correct idea and 100% sucessfull process.masters from gsm please kindly help.as most of members suffer from this problem.

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10-28-2007, 08:53	#2 (permalink)
baldev No Life Poster Join Date: Jun 2005 Location: Punjab , INDIA Posts: 1,260 Member: 153805 Status: Offline Thanks Meter: 325	As KP ics are small and delicate.Use low air at first then increase as balls starts melting.be quick and use Anti static precuations.

10-28-2007, 09:08	#3 (permalink)
linekbp No Life Poster Join Date: Sep 2004 Age: 49 Posts: 583 Member: 81697 Status: Offline Thanks Meter: 149	hmm i agree try not to touch the ic use tweezer , it will help and after placing the ic put some liquid flex under it , and reflow it a bit