Left hand side of screen when touched dosnt work but right side does.its like its out of sink,right side works fine but left side when touch presses the right side as well,

Remove the Compact Flash Cover. Located Right side next to where the network cable is installed. Remove the cover, using a small screw driver or small plastic stick depress black button gently. Called the Warm Restart switch.

When "." appears at the center on the left-hand side of the screen, enter "3" from the via 10-Key Pad. Enter the 8-digit service code and touch [END]. (Default value: 00000000) if required.

Touch [Touch Panel Adjustment] from the Initial mode screen.
Following the arrow mark, touch the four points (+) sequentially on the screen using a pen. DO NOT USE A SHARPE POINT!!!!!.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Need a new touch screen.One other option. Push utility/counter meter count then press stop 00 stop 02. Places machine in maintenance mode. Then press the utiltiy/counter will see maintenance mode press that find touch screen adjustment. follow the screenthen press start. T clear maintenamce mode and flashing start button. Power off machine main power left side of the machine to the rear.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

If this problem occurs again you must change your touch screen as it has malfunctioned. You can buy a new one from http://www.sewingmachine.com.au/ .

On the right hand side of the phone, in just about the middle, is the button that's used to lock the phone.
When you make a call, once the ringing tone can be heard, press this button and hold it in until the screen changes.
One of the options on the new screen will be keypad (bottom left). Another option will be loudspeaker.
Hope this helps.

the screen needs to be re-calibrated. Do this: while powering on the Leapster, hold down the ? key. If it's been worn off, it's the round key on the left hand side above the t-arrow keys and it's the middle button. A new screen will come up that lists Base Info Cart 1 Info, Cart 2 Info, Cart 3 Info. In the right hand corner is a "A" that you can touch with pen beside it, it says "Touch Calib" Touch on that.It will say starting...then in the upper left hand corner there is a +. touch it with pen. it will move to bottom left hand corner. Touch it with pen. It will move to right bottom corner. touch with pen. It will move to upper right hand corner. Touch with pen. It will move to the center of the screen. Touch with pen. Repeat until you come back to the Base Info screen. You're DONE! Power off and on again and you should be all set! Good luck!!

With the phone screen showing, press the red button at the right-hand side and hold it for about two seconds. The Centro should display a "Welcome" screen, then after a few seconds the phone screen should reappear with the carrier name at the upper left instead of "Phone Off". Each time you press and hold the red button the phone switch on/off..

try to calabrate the touch screen if it dosnt work replace the touch screen part# CSX1085

this sometimes happends if you have knocked the screen a few times.
it also does this when there is water inside it i would recommedn you place it on your heater for 2 hours.
if there is a chip in the screen or the left hand side of the screen is smashed it will not work because the sensors will be damaged

I think you can use the keys ...

Boot up
Press the <> button on the left hand side of the menu key
Use the arrow keys to get to display, press ok
Scroll down to calibration, press ok

PK

That solution does not work on the T77.
I have the same problem and this is how I solved it.
Press the Menu button on the bottom left corner of the screen.
Go to the second page (2/3) select the "REC MODE" (it is the firrst choice)
Select your mode as normal and not burst and then exit the menu.
Now you should be able to activate the flash from the screen..
Hope it works for you as it did for me.