Question about Garmin iQue 3600 GPS Receiver

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Changed battery garmin ique no backlight

Help need to repair backlight

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  • Halmav Feb 01, 2008

    I have the same problem. Replaced the battery without trouble. Now the backlight won't come on. The brightness/contrast won't change either. Is it fixable? Are there any instructions out there to help?

  • Anonymous Mar 04, 2009

    I have no back light on my Garmin IQ3600



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Most likely you broke one or both wire that supply power to the LCD. There are two ribbon cables to the LCD and two (black, white) wire. The ribbon cable cables supply data signal to the lcd and the smaller cable is the digitizer signal. The power wire (black, white) wires are soldered to the circuit board. And since these are LED lights there is a plus and minus and they have to be soldered correctly.
But before taking apart the IQUE 3600 did you try adjusting the brightness level?

Posted on Dec 31, 2007

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I fixed mine!!! Very delicate operation. My IQue has a ribbon cable with the two wires enclosed in the amber colored ribbon. I first unplugged the battery so I wouldn't short anything out and make a bigger problem. I used an exacto knife to slowly scrape the coating on top of each wire (to expose about 1/8 inch of each wire and only the wire). I then used a 15W soldering iron to solder a very thin wire to the ribbon cable coming from the digitizer (using tweezers to hold the wire). I cut the length of the thin wire, with sissors, to be able to reach the solder point at the end of the ribbon cable. I then soldered the wires to the solder point on the circuit board. I didn't touch the iron to the soldering point for more than a second so the wire wouldn't heat up enough to loosen the other solder. Making sure that the wires weren't touching, I finished by coating both wires and the immediate area with a silicon caulk. Hooked up the battery, put it back together, and I'm back in business.

Posted on Feb 11, 2008


I agree with audiqv8. After you have determined that the brightness level adjustment doesn't fix the problem and also checking to see if pressing the power on button a few times also won't fix the problem, carefully disassemble the cover again and locate the two small wires connected to the lower left hand corner of the screen and. Carefully try to press on the ribbon cable to see if you can get the leds to light up. If they light and you are good at soldering small connections you should be able to get the two wires reconnected (make sure you have polarity correct on the wires and you are back in business!

Posted on Feb 09, 2008

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Posted on Jan 02, 2017

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