View Full Version : key pad not working sgh n191 samsung
singapore
07-07-2005, 09:52
I have the samsung sch n191 cdma mobile the phone is okay the problem is that key pad is not working even after cleaning the contacts and the pcb
what could be the problem
the keypad is interfaced to Quallcomm chip, but there should be some de bounce buffer or filter (before interfaced) to MSMXXXXX chip. check the wire from pad to the msm. if the line and de bounce circuit are good you should change the MSMXXXX, i think.. :)
good luck...
arshil_teli
08-05-2005, 14:50
check out the side switches bro it will work 100 %
u need to change a small six legpart on leftside bottom of pcb front side . i will upload a photograph tommorow.
just change this part from a working hanset 100% confirm fault.
prince_raj_gsm
08-12-2005, 12:34
Check out above mentioned side keys of volume ,and remove two capacitor between these two keys. its always work .
Spacewalker
08-12-2005, 14:04
I have some problem with X450 . remove all capacitor, and other element - not weork. REMOVE Microfon - and WORK. change to good - and phone work ;)