Question about HTC Touch P3450 Smartphone
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.
The on/off button will also come loose. Remove the screw, circled bottom left. The vibrating motor, bottom right, should be levered up so it is loose.
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.
To 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 reassembly.
Take care and good luck
Posted on Oct 13, 2010
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Posted on Jan 02, 2017
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