My phone screen not working, key pad working but my phone was keypad locked. to unlock i need to press unlock button on screen but screen is not working .. i have restarted and remove memory, sim card also...
The reason your screens touch pad is not working is because the sensor board is no longer connected to the main panel of the phone, or the ribbon that connects the screen to the main board is faulty.
Try to open up the phone, by unscrewing it open from the back, then locating the ribbon and either try to reconnect it or replace the ribbon with a new one.
Remove your back cover, battery, sim, stylus and memory card. Now
remove the cross head screw,
Lever the antenna cover off using a mobile phone opening tool.
Now remove the six screws you have access to.
Next you need to separate the battery compartment from the rest of
the phone. To do so lever it away using your opening tool. There are
various recesses in the back of the phone do allow you to do this.
The volume buttons are stuck to the side of the housing and need to
be carefully peeled away. you can see the volume buttons after
they have been unstuck from the side of the phone. You can now peel the
large brown/orange ribbon away from the phone. It's held in place with
double sided tape. The circuit board which the ribbon is connected to
will come away with it. The on/off switch will be stuck down in the same
way the volume button was and also needs to be peeled away when you
remove the circuit board.
button will also come loose. Remove the screw, circled bottom left. The
vibrating motor, bottom right, should be levered up so it is
Lift the lower circuit board up and you'll be able to see another ribbon
connector which needs to be disconnected. Again, it attaches like a plug
and socket. Just lever this away from the circuit board to unplug.
screen is held firmly in place with double sided tape and to remove it
you first need to heat the screen (using a hot air gun or a hair dryer),
then push your opening tool very firmly. You'll then
see the screen raise slightly allowing you to slide something like a
guitar plectrum or credit card behind it. Move your plastic tool all the
way around the edge of the screen to release it.
You can now simply lift the
screen away from the housing.
You should now have the screen removed. Reverse the whole procedure for
Take care and good luck
Oct 13, 2010 |
HTC Touch P3450 Smartphone