I owned a MIO C220 GPS 1 1/2 month ago it fell from 4 feet high. Two weeks ago the touch screen started with problems wherever I pick on the screen it didn't make anything, I can only turn on or off trough the hardware button. I call MIO Tech support but the number isn't working 1-866-646-4477 :( . My last resource is try to repair myself. Can anyone know what could be the reason.
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I would suggest kindly take it in for repairs, as the screen looks to the source of the problem. It would require specialise tools to open the same. Since its under one year it would be better , if you can get serviced under warranty.
Its time to take it in for service. Touch screen needs to checked. There is nothing much you can do apart from what you have done on your own. It requires special tools to open.
I suspect the Touch screen has to be recalibrated.
The connection to the glass is usually through a series of small conductive rubber strips around the perimeter (like a gasket). If the pressure on the rubber is released slightly, it may not touch the glass or the circuit board on the other side. The pressure is held mechanically when the assembly is clamped together. Liquids could short the rubber strips causing unpredictable display and touch screen operation. It would need to be dismantled and cleaned. Another possibility is the ribbon wire to the LCD assembly is loose or even cracked so the traces are broken apart in the ribbon. The LCD assembly is difficult to repair by dismantling. I wouldn't recommend it.
I have a tx and have heard of this problem happening. Try hotsyncing to make a backup, then copy your folder so you backup is in a safe place. Then do a hard reset to put it back to factory default. Charge it fully and then run the digitizer again. The reason I suggest these steps is sometimes bad applications can muck with the screen sensitivity. If that doesn't work it may be a hardware problem. Hope it's still under warranty.
Markins- You should work for Dell. I called them several weeks ago about this problem, and they were quick to tell me that is was not in warranty any more so there was nothing they could do. I found your posting and I did exactly as you stated. My X5 hasn't worked this well in months. I sure wish Dell would pass this info on, but I guess there are a lot of people that just buy a new on.......Thanks for your help!
Originally Posted by Markins
This is a post I made a few days ago on the Dell Axim Forum. I still have'nt had any problems since I made the repair.
I had this problem for about 6 months. I was able to work around it by pressing in on the sides. The problem progressively got worse, so I decided to open it up and see what was going on. This is what I found:
The touch screen lays on top of the display screen. At the bottom of the touch screen, directly below the "Inbox Button", there is a flex cable (flat mylar with conductors). I found that the contacts from the button had scratch through the mylar on the flex cable and would short out. I suppose this would scramble the decoding from the touch screen.
To correct the problem, I cut a small piece of electrical tape and laid it across the damaged area on the flex cable. I reassembled it using just the screws (I left the rubber sides and feet off) and tested it. After I was sure it was working correctly, I finished assembling it.
You can find detailed disassembly instructions on the web by doing a search for X5 screen replacements. The procedure isn't that difficult, just be careful when you remove the rubber sides and feet to lift them slowly and try to keep the glue stuck to the rubber (this makes reassembly much easier).
1. Do a complete backup of your unit (you will loose all your data).
2. Remove both batteries and any cards.
3. Remove the rubber feet, sides and plugs at the bottom back.
4. Remove 6 screws from the back.
5. You should be able to remove the back of the unit.
6. Unplug the speaker cable (pull straight up on the plug).
7. Lift the motherboard and screen away from the front cover.
8. Make your repair.
9. Reassemble in reverse order.
Hope this works for you, I did this about a week ago and haven?t had a problem since.