Cannot see screen at times, goes black and white with lines.
The charging screen comes on when it's not even plugged into the charger. Randomly the screen will completely stop working and becomes scrambled to where I cannot even tell what's on it. It becomes black and white with lines all over.
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Sounds like the battery is completely drained. Remove and replace battery, and charge for a couple of hours with your AC charger. If it still does not fully charge, you may have a bad battery. Good Luck...
your NG3 should have been preprogrammed for the type of batteries you are charging. The NG3 has the 3 wires from the power cord. Here is what I have done:
Brown from charger goes to black wire
Blue goes to white wire
yellow green goes to green ground.
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.
Try taking the batteries out ( fully disconnecting them from the gold contact points) ... then put them back in with the charger already plugged in. It should go to that blue charge screen instead of turning on. LEAVE IT ON THAT CHARGING SCREEN for at least 5-10 mins. Now, Hold down power, screen goes black... then tap power about 2 seconds after screen goes out, and it should start up as normal. If taking the battery out has no effect, I would investigate whether that (the battery... being dead/unchargeable) is the problem. I'm hoping one of the two answers gets ya where you need to go.
OH AND YOU CANNOT USE USB CHARGER TO DO THIS. IT HAS TO HAVE DIRECT FROM-THE-SOCKET POWER TO CHARGE UP THAT FIRST BIT OF COMPLETELY TAPPED CHEMICAL (ELECTRICAL) REACTIONS.