Question about Lowrance GPS
Water temp reading is about 15 degrees to low. How to calibrate for accurate temp reading
Posted by Anonymous on
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Posted on Jan 02, 2017
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
SOURCE: inaccurate reading
I'm not sure why you need it calibrated if your Docotor says it's accurate but here is a web site link....
I hope this helps.
Posted on Dec 25, 2008
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
Take your temp knob off and look in the center of the stem and you should find a small set screw. Using a small precision screwdriver, turn the screw until you see the light come on. (You won't have to turn it far.) Turn it a little at a time, maybe a 1/16 of a turn. Leave your thermometer in the oven with the door closed and at or near the temp probe that is in the oven. This way, you are getting a true reading.
Posted on Feb 15, 2009
With a small screw driver and a steady hand. Set the knob to the temp u want then pull knob off. Inside the stem there is a little screw. Try and regulate it slowly also allow it enough time to reach the desired temp. Good luck.
Posted on Sep 18, 2009
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