1112 rh-93 key '3' not working
 

hi all.
rh-93 key 3 not working. i have try to clean the PCB b4,,,

dont tell me to change the IC keypad to fix this prob.

i need scematic for 1112 keypad ways
i'v allready use the search button b4 write this thread,, and i did not found any scematic for 1112/1110 keypad.

REGARD

link was not work sir

hallooooo,,,,, only key 3 can not work. the others is fine.

can you help me please?

change the key paid ic

r u resold keypad IC or change keypad IC no any other solution is here

change the key paid ic

i think if this ic problm,,,,, is not just '3' (three) key in trobl...

i means if ic is broke........... key 1,2,3 and soft key or 3,6,9,# must be in troble too.
am i wrong?

i do flashing with some version, , , , , ,
prob still same,, can not fix by software



i think UPP is damage

any way, thank for suggestion

rehot this IC which is in white area 100% solution

i have already done b4 sir.....
can not fix the problm

REGARDS

for sure keypad ic malfulction..... try to replace it....

bro, already check resistance from emif sim? track keypad from emif? if u sure ok the other solution is only upp:rolleyes:

yes i think so. UPP problm.
Thank for all.

REGARD