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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair

Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section.

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Old 06-16-2004, 14:30   #1 (permalink)
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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]
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Old 06-17-2004, 01:11   #2 (permalink)
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Exclamation try this

open the fone agen... check the keypad connector at the buttom... try cleaning it this myt help...
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Old 06-17-2004, 09:24   #3 (permalink)
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Thank you but I did that many times.
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Old 06-17-2004, 18:30   #4 (permalink)
AFR
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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
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Old 06-18-2004, 08:21   #5 (permalink)
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Thanks for your reply

Check pm
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Old 06-19-2004, 12:54   #6 (permalink)
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try the litlle crystal under the keypad connector it works 100%
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Old 06-19-2004, 13:48   #7 (permalink)
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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
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Old 06-19-2004, 16:40   #8 (permalink)
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he he replace the key chip its from glass 100% tha works
best regards keany
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Old 07-05-2004, 13:43   #9 (permalink)
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which one is the key chip?? is it one of those 2 chips near the keypad connector??

thanks
tonytony
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Old 07-07-2004, 15:15   #10 (permalink)
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U can change this keypad driver from nokia 3650(glass) near keypad connector
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Old 12-08-2004, 16:34   #11 (permalink)
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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?
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Old 12-19-2004, 10:14   #12 (permalink)
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Key chip you all mention above called key filter.
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Old 12-22-2004, 17:08   #13 (permalink)
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yes as KIRIAZY said ( try the litlle crystal under the keypad connector it works 100%
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Old 01-17-2005, 15:35   #14 (permalink)
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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
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Old 01-19-2005, 06:34   #15 (permalink)
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hi;

can anyone post here photo of keypad pcb both side ?

w.b.r.

Last edited by baraka42; 01-19-2005 at 06:49.
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