6600 keypad problem
 

The phone dropped and the sreen will only show ligth , but the bit problem that keys 1,4,7 and menu will not work after force normal mode and will some time boot with no problem

rehot upp but no help .

I need assistance please.

[email protected]

try this
 

open the fone agen... check the keypad connector at the buttom... try cleaning it this myt help...

Thank you but I did that many times.

Hi Keke,

I have the same problem.
After the phone dropped keys 2,5,8 won't work.

There are 2 small black chips in the bottom area of the
pcb. I believe that this could be the problem because
one of the chips seems to be chiped on the edge...?

Sorry, I dont have their names....still looking for schematics!

Regards

AFR

Thanks for your reply

Check pm

try the litlle crystal under the keypad connector it works 100%

Thanks
I also trace that from the service manual
but it is not easy to get that !!!

It so small but I will try to reball and see

he he replace the key chip its from glass 100% tha works
best regards keany

which one is the key chip?? is it one of those 2 chips near the keypad connector??

thanks
tonytony

U can change this keypad driver from nokia 3650(glass) near keypad connector

ok guys, the problem is really in the two BGA chips near the keypad connector. I was able to fix many of these whenever I had another 6600 to use as a donor. They are protection ICs similar to the one in 8310 near the sim connector. In 8310 we are able to take the chip off and put 3 shortcuts on the pins. Here it should be the same.
The question is: what is the shcematic? :confused: :confused: :confused:

Key chip you all mention above called key filter.

yes as KIRIAZY said ( try the litlle crystal under the keypad connector it works 100%

WHAT DO YOU MEAN BY ( try the litlle crystal under the keypad connector it works 100%???

HEAT IT, REMOVE IT, OR REPLACE IT??

DOES ANY HAVE SCHEMATIC TO PUT 3 SHORTS INSTEAD OF REPLACING SINCE NEW FILTER IS NOT AVAILABLE!!

TONYTONY

hi;

can anyone post here photo of keypad pcb both side ?

w.b.r.