Question about Garmin StreetPilot 2620 GPS Receiver

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Garmin 2620 with a touch screen display 'drift' problem...

Woofer....
I have several 2620's and like them. One unit is giving "touch" screen problems. Using the normal 'Find' steps to touch calibrate the screen, it will not hold its calibration. It can be off 1/8" - 1/4" to the touch. Not good when naming wpts,, etc. It does not seem to care if the unit is hot or cold. It still drifts on a daily basis. The error is always on the right side of the screen and it can drift either + or -. There have been times when the upper right "Close/Back" button is always there, but not accessible to the touch as the drift has its ghost clear off the right hand side of the screen. Usually the drift is the opposite direction.
Any suggestions on how to fix this screen drift problem.

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  • Anonymous Dec 13, 2008

    I have 2 2620s both with the exact same problem

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5 Suggested Answers

  • 1 Answer

SOURCE: Garmin 2610

Back up the unit then do a master reset.
Switch OFF, Press Page + Menu and turn on, holding the buttons for 5 seconds.
Then recalibrate. I did the recalibrate a few times before it was OK. If you use a stylus when the cross appears and hold it on the screen and move it to the corners you can see the error. Make a mental note and go halfway between the two if it does not calibrate at first go. Then when it calibrates, do it again. I recalibrate every now and again. I think it could be a firmware problem. I will try going from 4.8 to an old version

Posted on May 06, 2008

  • 1 Answer

SOURCE: Screen Calibration problem with SteetPilot c330

Turn off the unit. Then hold down the power button for about 1 minute and the calibration screen will eventually come up.

Posted on Oct 13, 2008

  • 7 Answers

SOURCE: touch screen won't calibrate on garmin 2720 gps

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

sharcnet
  • 2124 Answers

SOURCE: Garmin - Nuvi 650 - Touch screen dead/unresponsive

This can be repaired for far less than what you think. Please see this link:

http://www.sharc.net/gps_LCD_repair.htm

- Jim

Posted on Sep 11, 2009

sharcnet
  • 2124 Answers

SOURCE: Cant calibrate my Garmin Nuvi 255 GPS

You have the wrong procedure. Please see this link:

http://www.sharc.net/discus/messages/6/77.html?1236709210


- Jim

Posted on Dec 20, 2009

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I havn't tried this yet but I will tomorrow.

Per the Manual,

To calibrate the touchscreen:

  1. Press the remote or unit MENU key.
  2. Select Display
  3. Press the remote or unit FIND key to begin calibration.
  4. Follow the on-screen instructions
Hope this helps!

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(1) Disconnect any external GPS antenna. (2) Do not turn on auto engine. (3) Turn off any other peripheral devices. (4) Simultaneusly hold down the PAGE and MENU buttons while turning on the 2620. A prompt box will appear asking if you really want to delete all user data. Touch the NO selection. Then turn off the 2620. (5) Simultaneously hold down MENU & ROUTE buttons while turning on the 2620. (6) A self-running diagnostic program will appear. Allow it to run for a couple of minutes; check to see that all parameters indicate "PASS" or other indication of being OK. If any parameter is not OK, make a note of it for potential communication to Garmin, then proceed with the following steps (7) Turn off the 2620. (8) Simultaneously hold down the PAGE, MENU & ROUTE buttons while turning on the 2620. A SCREEN CALIBRATION adjustment screen will apear. Quickly touch the points indicated as the calibration program runs. At the end of this procedure, the screen will display a window indicating that the calibration either "PASSED" or "FAILED." If it "PASSED," continue to steps (8)-(9). If it "FAILED," turn off the 2620 and repeat this step. If, after three calibrations attempts, each one is "FAILED," then also turn off the 2620 and proceed to steps (8)-(9). (8) Turn on the 2620. Press the "OK" button each time prompted to do so. Wait for maps to load and for the 2620 to initialize, acquire satellites, and display your position. (9) Press FIND button, then touch the right-hand vertical screen position adjustment to scroll screen display down to reveal WAYPOINT selection box. If unable to select WAYPOINT, or if attempting to do so only selects an adjacent box, then repeat step (7), and return to this step. (10) When various waypoint selections appear, attempt to scroll down to a selection not visible when the list of waypoints first appears, and select one of them. If still unable to select WAYPOINT box, unable to scroll screen down (or if trying to do so selects a stored waypoint instead), once again repeat step (7). If successful,then proceed to step (11). Also proceed to step (11) if you have repeat step (7) but then still can't select WAYPOINT, can't scroll down after selecting WAYPOINT, or can't select a particular stored WAYPOINT. (11) Press the upper-right hand "X" to close out the FIND screen or sub-screen within that function. If unable to close the screen, press the PAGE button. (12) Press FIND button, and when selection screen appears, touch ADDRESS. On next screen, touch the STATE line and touch the ENTER A CITY in (name of state). When keyboard appears on screen, use it to enter your city, then touch OK. Continue this procedure to enter your house number and street name, then press "OK." If all screen keyboard keys not responding, repeat step (7), turn the 2620 off and on again, wait for it to initialize, and then attempt this step again. (13) Repeat this procedure several times if not initially successful. By the second or third run-through, the touch screen should respond fully and accurately. If, after many runs through this procedure, the touch screen still will not respond, the screen sensor probably will need to be replaced ($255). The foregoing procedure brought my touch screen back to life last evening, much to my delight. Do not be too concerned if the SCREEN CALIBRATION step does nto produce a "PASS;" on my third calibration attempt it produced a PASS but all of the touch screen points still had not returned to functionality. I was unable to get a PASS during the screen calibration step after that, but the many repetitions apparently nonetheless made the difference, as by patiently following the above prcoess for five cycles, full screen functionality was restored.

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(1) Disconnect any external GPS antenna. (2) Do not turn on auto engine. (3) Turn off any other peripheral devices. (4) Simultaneusly hold down the PAGE and MENU buttons while turning on the 2620. A prompt box will appear asking if you really want to delete all user data. Touch the NO selection. Then turn off the 2620. (5) Simultaneously hold down MENU & ROUTE buttons while turning on the 2620. (6) A self-running diagnostic program will appear. Allow it to run for a couple of minutes; check to see that all parameters indicate "PASS" or other indication of being OK. If any parameter is not OK, make a note of it for potential communication to Garmin, then proceed with the following steps (7) Turn off the 2620. (8) Simultaneously hold down the PAGE, MENU & ROUTE buttons while turning on the 2620. A SCREEN CALIBRATION adjustment screen will apear. Quickly touch the points indicated as the calibration program runs. At the end of this procedure, the screen will display a window indicating that the calibration either "PASSED" or "FAILED." If it "PASSED," continue to steps (8)-(9). If it "FAILED," turn off the 2620 and repeat this step. If, after three calibrations attempts, each one is "FAILED," then also turn off the 2620 and proceed to steps (8)-(9). (8) Turn on the 2620. Press the "OK" button each time prompted to do so. Wait for maps to load and for the 2620 to initialize, acquire satellites, and display your position. (9) Press FIND button, then touch the right-hand vertical screen position adjustment to scroll screen display down to reveal WAYPOINT selection box. If unable to select WAYPOINT, or if attempting to do so only selects an adjacent box, then repeat step (7), and return to this step. (10) When various waypoint selections appear, attempt to scroll down to a selection not visible when the list of waypoints first appears, and select one of them. If still unable to select WAYPOINT box, unable to scroll screen down (or if trying to do so selects a stored waypoint instead), once again repeat step (7). If successful,then proceed to step (11). Also proceed to step (11) if you have repeat step (7) but then still can't select WAYPOINT, can't scroll down after selecting WAYPOINT, or can't select a particular stored WAYPOINT. (11) Press the upper-right hand "X" to close out the FIND screen or sub-screen within that function. If unable to close the screen, press the PAGE button. (12) Press FIND button, and when selection screen appears, touch ADDRESS. On next screen, touch the STATE line and touch the ENTER A CITY in (name of state). When keyboard appears on screen, use it to enter your city, then touch OK. Continue this procedure to enter your house number and street name, then press "OK." If all screen keyboard keys not responding, repeat step (7), turn the 2620 off and on again, wait for it to initialize, and then attempt this step again. (13) Repeat this procedure several times if not initially successful. By the second or third run-through, the touch screen should respond fully and accurately. If, after many runs through this procedure, the touch screen still will not respond, the screen sensor probably will need to be replaced ($255). The foregoing procedure brought my touch screen back to life last evening, much to my delight. Do not be too concerned if the SCREEN CALIBRATION step does nto produce a "PASS;" on my third calibration attempt it produced a PASS but all of the touch screen points still had not returned to functionality. I was unable to get a PASS during the screen calibration step after that, but the many repetitions apparently nonetheless made the difference, as by patiently following the above prcoess for five cycles, full screen functionality was restored.

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3 Answers

Touch Screen Issue


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