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Re: D40 will not power up
When a charged battery is installed, the card access led on the back of the camera should blink once. If it doesnt, try resetting the camera with the small microswitch on the bottom of the camera body (opposite side from battery compartment). Failing those, have a Nikon shop look at it.
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The Nikon D40 uses the EN-EL9 7.4 Volt Li-ion Battery. You should be able to read 7.4 V DC between the (+) & (-) terminals of the battery after it has been in the charger for several hours. If it does not, it indicates a bad battery, charger or both. There should over 7.4 V DC on the terminals of the charger if there isn't, it suggests a bad charger. If the battery voltage is OK, make sure it is inserted correctly. If still having trouble, it may be related to the camera power switch or internal circuitry. This will require returning to Nikon for repair. Good luck!
take a digital camrea or a camrea phone point the remote sensor (the bit you would aim at your player) towards the lens of the camrea and look on the camrea/phone display press buttons on the remote can you see a flashing light coming from the sensor ?? if not its due too a flat battery or faulty remote if you do then its likely too be a fault with the player
Your problem may be due to weak/worn out batteries or corrosion on the
battery contacts inside the camera
which can prevent the full power of the batteries from flowing into the
camera. Try this free fix before you do anything else: remove the
batteries and wipe the camera contacts firmly with
a dry cloth (heavy corrosion may require cleaning with a wire brush,
steel wool, or sandpaper). Remove any residue that may have fallen
into the battery compartment during cleaning, then wipe both ends of
the batteries and place them back in the camera. This cleaning clears
the problem about 90% of the time. If it doesn't work for you, chances
are that your batteries need to be replaced because they're just too
worn to properly power the camera.
And then, of course, there's the possibility that your camera may have
a problem that requires professional repair.
to see if your remote is working obvouisly put in new fresh batteries turn on the camrea on your phone or get a digital camrea and point the infa-red sensor at the camrea and press some buttons while looking at the screen of your phone/digi cam should see a white flashing lights as you press the button if nothing then the control is dead
I would first remove the battery and leave it unplugged and hold down the power button for 45 seconds. that does a system discharge of power. put the battery back in and try the power again. Write back if this does not resolve your issue.
the best thing to do would be to press the 2 green dots together to do a master reset on the camera. 1st green dot would be just beside the shutter and the other would be on the left of the lcd. press and hold them both for about 10 secs