Had same problem with my GO910 unit, after it was about 6 months old. Contacted TomTom and sent unit back. They said that they are aware of the problem. They sent me back a new GO 720 with 2008 maps as they said they could not fix the problem in the 910. and they were not importing anymore 910 into Australia.
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Alarm means that the unit is overtemp for a freezer. Your breaker was likely overloaded if the same issue didn't follow the machine to the next outlet... If the alarm stays on when the unit is clearly freezing, you have some type of control problem. That model number is incomplete/incorrect.
Turn the Navman off by holding the power button in the upper left corner of the device until the screen goes blank.
Plug the unit into its charger using the USB port on the
bottom of the unit. The battery indicator light next to the power switch
should turn orange, indicating that the device is charging. Once the
light has turned green the charge is complete. If the light does not
turn on, verify that the car charger is plugged into a working outlet.
Sweet you do not need to leave the charger plugged in for several days. Sounds like there is a charger problem When you first plug the charger in with batteries depleted you should be getting a red and yellow light with the yellow turning green when fully charged. now the charger (built in) could have become unplugged from the power module located in the rear of the chair behind the black cover. To get to it you have to remove the seat, shroud and batteries then using a phillips screwdriver and adjustable wrench remove the black cover. The charger cord will be the last one on the left with a small 4 pin white plastic plug make sure it is well seated in the power module. If it isn't loose then you have a problem with the charger or the circuit. Now if you know of a friend that has an off board charger for a chair or scooter that you can borrow you can charge the batteries using the charger port located under the front of the joystick Plug the charger into the port then into the wall socket and let er rip Charge until the light turns green overnite is a good habit to get into If the onboard charger is bad I would suggest you by an offboard charger (cheaper) Now if Medicare paid for your Dads Chair then they will pay for any repairs even batteries and you can contact the provider that your dad got the chair from to see if they will repair it Hope this helps
check your power cord to insure that you are getting power. make sure power cord is plug in the back.
look in back of computer. you will see a little orange switch. it says 115/220 click to 220. boot computer.
if computer boots up turn off and click back over to 115.
if it does not boot your power supply in your computer needs replacement.
Try this: remove the battery and unplug the power, hold down the power button for 10 seconds, then plug the power back in, and try turn it on again. If this doesn't work, check the power plugin port, if anything in there is moving around, it might be broken and need to be repaired. Check for a local electronics or computer store for that. The only other problem I can think of is that the motherboard died, probably from over-heating. This usually requires a new laptop, or an equivalent price for a new motherboard. Good luck, I truly hope the first one works.
Charge the unit over night, Plug in the AC charger and you should see a lightning bolt over the battery bar graph display.
With the charger plugged in, gently press and hold the on/off power until the screen goes black and displays the text "Charging battery". After a few seconds, the screen will go black to conserve power. At any time, you can press the screen and it will light up saying its still charging.
If you let it go over night, when you touch the screen, it will say Charging Complete and you can then remove the charger. You should have full green bars on the battery indicator.
Dont use the USB to charge the 404. Use a wall charger that accepts USB. Wally world (Walmart) has one for 15 dollars that has 2 USB ports. It works for me. Also the docking station will charge the 404 in no time at all. It's 80 dollars. Make sure you get the generation 4 unit