Question about Garmin StreetPilot 2720 GPS Receiver

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Touch screen won't calibrate on garmin 2720 gps

My touch screen will not calibrate on my garmin 2720. You can not go back once you have gone into a dircetion mode.

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  • Anonymous Jun 13, 2008

    I have the same issue

  • bophus Sep 06, 2008

    Touchscreen simply quit responding to touch. Manual that says go to "display" to fix is incorrect. There is no "display" under "settings."

    What up with that?

  • btpd450 Sep 23, 2008

    I just recently aquired a 2720 and also am unable to successfully calibrate the touch screen.

  • sjhpe Nov 09, 2008

    Same problem as described above. Cannot recalibrate screen, even after following the procedure described in owners manual. Very frustrating!

  • straphanger9 Jan 17, 2009

    I updated the map to the current version and a day later the touch screen asked for recalibration. It's now at the point where the screen will accept the first couple of taps, then goes into recalibration mode - and stays there. Pulling the power lets me tap again, but two or three taps is all I get. Driving along I hear click after click as the unit processes non-existent taps.



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The touch screen is a 4 wire resistive type made up of several layers. A thin plastic layer, a micro thin metal layer, microdots for insulators, another ultra thin metal layer, and a final plastic layer. All of these layers amount to the thickness of a sheet of paper. This whole stack is bonded to a thin sheet of glass and placed over the actual TFT display.

It's amazing that you can see through all these layers and only lose 20% of the light. What's not so amazing is that those thin metal layers are prone to damage. I've seen several with no apparent damage that didn't work, and several with visible scratches or cuts that worked fine.

I usually start by installing (or reinstalling) v7.2 firmware and then attempt to recalibrate the screen, sometimes that works. Next I would try re-seating the 4 conductor touch screen pigtail in it's ZIF socket nestled between the big white wires on the display assembly. The last resort is to buy a broken 2600 or 2700 series Garmin and salvage the touch screen. You could send it to Garmin for a flat $250, but that makes no sense at all.

If you get another screen (Garmin won't sell you one), Here's how to replace it:
Remove the six screw holding the case together.
Split the cases and pull the patch antenna out of it's slot.
Remove the four silver screws holding the display assembly into the front bezel.
Unhook the small ribbon cable that goes to the infrared receiver under the red lens.
Pull the display assembly out of the front bezel. It won't come all the way out because of cables.
Use a razor to cut the plastic tape holding the touch screen bracket to the TFT display.
Unlatch the 4 conductor ribbon from the ZIF connector nestled between the 2 big white wires.
Use a penknife to unbend the metal tabs keeping the touch screen from coming loose. I usually just do the two by the IR receiver.

When you reassemble, don't get frustrated with the gaskets, they're tricky but it can be done. Tom

Posted on Jan 24, 2009

  • tom1beck Jun 12, 2011

    This suggestion was right on point. I took the back off, took out the 4 silver screws, lifted up the screen, took off the black tape and saw the ribbon connector from the screen into the connector. I lifted up the plastic rim of the connector, lifted the ribbon connector slightly, and put it back in, pushed the plastic rim back down, and reassembled. works great now. THANK YOU TOM 2720

  • Tom 2720 Jun 13, 2011

    You're welcome, let's hope it keeps working. Tom2720


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Call Garmin Tech support,, I had same problem  and it could not be fixed at home.......

Posted on Oct 11, 2007


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