Question about Garmin Nuvi 760 Handheld GPS Receiver
I have a Garmin Nuvi 760. Does the connector that plug into the craddle have the audio signal? What is the pin diagram? I would like to make a cable that can both charge the unit and take a audio out signal to my car stereo audio input.
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Posted on Jan 02, 2017
SOURCE: Hard wiring the Nuvi 660
Make sure you use the proper kit for hardwiring. The Garmin DC adapter setp down the voltage from 12vdc to 5vdc. If you don't get the right kit you could fried your unit.
Posted on Jan 31, 2008
SOURCE: Garmin Nuvi 760
Sounds like you both have a battery problem. I experienced a similar problem when trying to charge via the USB-cable connected to my computer.
Ended up buying an original charger (expensive) and the charging went smooth.
The car charger should in any case work fine, so probably your battery is not very healthy.
Try holding your finger on the battery symbol for about 10 sec. The unit will then switch to a technical page. There you can observe the battery and charging voltage. When I plug in my computer USB-cable, I read around 4,4V and that is not sufficient for charging my battery.
When connected to the original charger, this voltage rises to about 5V which gives a nice charge. When unplugging charger, the unit displays the battery capacity. If the charging voltage is OK, but battery capacity drops quickly after you unplug charger cable, the battery is probably bad. (Of course you have to charge is for some time) I think around 4V battery voltage give 100% capacity. 3,9V gives about 90% capacity.
This will not solve your problem, but can give you an idea about what is wrong.
Posted on Nov 17, 2008
I have the problem solved I at first had this problem after about 5 minutes of messing with my GARMIN NUVI and having many electronic gadget I thought about diffrent buttons to hit at the same time heres how you charge your NUVI with a computer and a usb cable
1st: make sure your NUVI is OFF then plug in the usb cable from the computer to the NUVI, after you hear your computer ding from new device connected, and the NUVI displays the computer icon move to step 2
step 2: if you have xp go to START and MY COMPUTER. with vista its START then COMPUTER button on the right side
step 3: with MY COMPUTER window open hold the NUVI power switch to the ON position and RIGHT CLICK the NUVI device logo (blue triangle) and select EJECT .. ( DON;T HIT SAFiLY REMOVE)
step 4: when you see GARMIN display on the screen you can letgo of the power button on the NUVI ****** if you unplugthe usb it will display message stating EXTERNAL POWER LOST SWITCHING TO BATTERY POWER***** while it is plugged to the computer the battery meter will disaper
Posted on Dec 03, 2008
Sounds like your speaker went south. Since your fm transmitter is working I'll be your earphone jack is too. So you could always use an earphone. Only other option is a speaker replacement.
Posted on Jan 07, 2009
This is for a Garmin Nuvi 760:
(From what you said, it sounds like you need a LCD+touch-screen combo)
First, you can find a new touch screen on E-bay for about 10-20 dollars. The LCD+touch screens are about 60. If you just cracked the screen but the display looks fine, you can just replace the touch screen.
Now, for do-it-yourselfers. To open the back of the case, there are 2 small torx (star) screws on the back to remove. If you don't have a torx driver, sometimes just the right size eye-glass screwdriver can fit but be careful not to strip the heads. Once those are out, you need to seperate the back casing from the front. I used an old credit card to pry gently with all the way around until it pops off. Don't force it, just be patient, it will come off.
Next, I recommend unplugging the speaker and battery so you can put the back aside for more room. There are 4 more phillips screws on all 4 corners of the circuit board. Take those out and the board comes out relatively easy. Don't force it. Once it is loose, there isn't much room to play with because of the ribbon cables. The large one is the LCD, the 4 pronged one is the touch-screen. There is a lever that lifts up and secures them in place. I got away with leaving them connected, but they are fragile and easy to tear. Next is separating the silver plastic part of the case from the black front that goes around the screen. I pried a bit with an eye-glass screwdriver around the area where the earphone jack and memory card go in. Again, using a credit card to pry all the way around is best that it won't leave scratches. Don't force it, just be patient.
Once you have that off, remove the screen from the case. I did it by pushing with light-moderate pressure all around the edges massaging it out. The touch screen and LCD have a rubber/leathery thin tape going around the perimeter. On the front, I got under it with an eye-glass flat head screw driver and slowly worked it around until it was free, being careful not to tear it. On the back, I used a razor-blade to un-stick it from the LCD, but be very careful not to damage the LCD screen if it's still working. The goal is to get this off in one piece. Once you have that off, there is the LCD and touch screen with double-back sticky black tape holding them together around the edges. I used a razor-blade. VERY CAREFULLLY separating them. Once that was done, I carefully scraped the remainder of the tape off the LCD which was un-reusable. I didn't know what to use for putting the new screen on since I didn't have that special type of tape, so after raiding my tools, I found some rolled butyl rubber for installing windshields. I cut small pieces of this off and put them around the perimeter of the new touch-screen (VERY THIN) in the same place the old one was, as if I was installing a real windshield. This took much patience, but in the end it worked great. Before putting the new touch-screen on the LCD, I blew it off with some compressed air, being careful to never leave a fingerprint on it while working on it. After putting it on, I pressed softly but steadily to get the rubber to even out so there wasn't any high points. Then, I replaced the same sticky tape that went around the perimeter of the 2 screens the way it was. It wasn't as sticky, but I made sure it was in place and it kept there by the pressure on the sides of the screen casing. Make sure you get it on right, because I think it's there as a shock-absorber so that the screen doesn't break as easily if dropped or jarred. I plugged back in the LCD screen into it's corresponding place on the circuit board and closed the tiny lever that secures it in place. Then comes putting everything back the way it was in reverse order. Be careful and go slowly, I ended up accidently pulling the ribbon cable out for the LCD and Touch screen and had to go back and reconnect them. This is a good time to attach the battery and turn the GPS on to see if you have all your connections made securely before everything is fully together. Put everything back together in reverse order, remember, if you have to force it, then don't. Don't forget to hook the speaker back up.
When it's all back together, if the new touch-screen doesn't tap where you tap it, you can calibrate it. This can be done by turning the unit off, then turning it on, then IMMEDIATELY switch it to the right(lock) position before it boots up and hold your thumb on the screen for about 30 seconds. There will be a callibration routine that will tell you to push dots on certain parts of the screen. If you do this with a stylus, it will probably be more accurate.
Now hopefully, you will be more careful and not drop your nuvi again. I hope this helps.
Posted on Sep 05, 2009
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