Showing posts with label guide. Show all posts

Showing posts with label guide. Show all posts

Saturday, November 23, 2013

Nokia 5130 keypad solution keys and switches connection tracing guide for repair

Nokia 5130 keypad solution, keys and switches connection tracing guide for repair

Heres the Nokia 5130 complete keypad solution, this solution shows each certain keypad key connections including the button switches such as the volume up and volume down control buttons and also the MP3 player button switches such as the Start/stop, forward and rewind button switches.

The solution may help repair and fix nokia 5130 keypad malfunction and button switches failure. You may check, trace particular keys which are not able to function by using the repair guide below. Each group of colors indicates that they are connected with each other. So just locate where that particular non working key being connected and mend it found cut or open.

Nokia 5130 xpressmusic keypad keys malfunction full tracing solution

nokia 5130 keypad key jumper ways full tracks

The Power ON/OFF key is isolated and not connected to other group of key connection for it only holds for switching or powering up the device. There is an open spots near the keypad filter IC that the power ON and OFF key can be connected when the power key fails or or if the line is cut or open.

Nokia 5130 ON-OFF power key jumper ways

nokia 5130 power on and off jumper ways

And heres the internal connection of the keypad filter IC, you may check and apply a temporary jumper on this components to ensure that the inner line paths from the application processor is not being damaged.

Nokia 5130 keypad filter IC jumper ways
source

nokia 5139 keypad filter Ic jumper ways

source and spcial thx for gsmangel-nokiaharware.blogspot.com

Monday, November 18, 2013

3GS Jailbreak Unlock Guide ios 6 0 1 tethered

What we need to do this?

1= A iPhone 3gs with supported bass band for unlock with ultrasnow.
2= iPhone2_1_6.0.1_10A523_Restore.ipsw
3= iPhone2,1_6.0_10A403_Restore.ipsw
4= redsn0w_win_0.9.15b3 or later version

Warning

Before starting be very careful do full backup of your phone using iTunes. also save SHSH blobs using redsnow to revert back to your current version of ios.

This method is tested by me and working.you see in pictures. do at your own risk i am not responsible of any damage or any mistake during this work.

after doing backup of your device.
connect iphone with pc and open redsn0w_win_0.9.15b3 then go to Extra > Even more > Restore
and select iPhone2_1_6.0.1_10A523_Restore.ipsw redsnow prompt you that redsnow doesnt recognize this ipsw but it can still prevent a bassband update select yes.

redsnow will process ipsw and then restore to iphone this will tack more then 10 minutes approx to complete this possess.

now you need to jailbreak this phone to get working

open redsn0w_win_0.9.15b3 then Extras and select ipsw and select
iPhone2_1_6.0_10A403_Restore.ipsw Now go back and press jailbreak.
and follow the instruction given by redsnow. this will complete in few minutes. after this possess complete you will see phone in working condition but when you press cydia it will close immediately don.t worry.

now open redsnow again and press Extras and then Just boot (just boot tethered right now) after this phone will be normal cydia and other apps will work now.

now go to cydia and add source pointed in picture. and install ultrasnow and ultrasnow fixer.

after installing ultrasnow and ultrasnow fixer phone should be unlocked. if still searching just reinstall ultrasnow. phone will recive network signals now.

This is tethered jailbreak because untethered jailbreak for ios 6.0.1 is not yet released.

So Good Luck all of you friends who give some time to read this.

Saturday, November 2, 2013

Keypad Problen in China Mobiles Repairing Guide

China Mobiles Some Keys Not Working Guide
Keypad Problem in China Phones
First we need to know china phone keypad connected with PCB how way

(A) Direct on PCB

(B) Flex System (flex cable direct soldering pcb to keypad panel)

(C) Flex and socket system include (flex one side soldering with key panel other side connect to pcb with socket)

(D) only Socket System (here have 2 socket, 1 with key panel others with pcb)

Keypad problem have various type

1. All key not work.

2. some key work and some other not work.

3. sometimes work and sometimes not work.

1. All key not work

china phone all key not work for this type of problem
(A) though its touch screen phone, first try to disconnect touch panel line from phone pcb or display flex (4 line)

(B) though not solve and keypad direct on pcb first you try to good clean full pcb with cleaner.

(C) though not solve now you try to format/flash your phone because some time key problem come from software problem.

(D) though still not solve now you check must be CPU. 95% china phone keypad directly going in cpu. and other 5% first going to resistor or capacitor near the cpu or keypad than going to cpu. so now first check them than you can try to re-hot, re-soldering or changing cpu.

(E) though its flex or socket system, first check GND connection continuslay pcb to key panel. next check full flex or socket all line going continuously pcb to key panel or not. also sometimes flex or socket shorted with other line or gnd so check also them.

(F) Also you can check all key anyone is short 2 line.

(G) sometimes keypad line broken from cpu pin on pcb to key panel, so check them.

2. Some key work and some other not work
Some key work and some other is not work for this type of problem

(A) maximum time this problem we face for flex or socket system keypad. so check flex cable and socket all line any line is broken or not and though need change them. and check all key connection on key panel.

(B) though its direact on pcb, some of key line broken internaly. and maximum china phone have alternative test point near every key or with other key on keypad. so check them with multimeter and though need connect to not work key with near testpoint or other working key.

(C) common problem is keypad metal ball (which is short 2 line on key when we press) sometimes its damage for phone water damage or over key voltage, so clean them or change.

(D) also try to check line continuously from cpu to not working key.

3. sometimes work and sometimes not work
this problem come from this defect

(A) flex or socket system keypad any line is bad soldering or do lose contact. check them and
re-soldering or keep there line join with extra ware.

(B) for cpu bad soldering or cpu pin is broken. so re-hot or re-ball cpu.

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