Chosen Solution
I purchased a D1x from an auction and discovered the included Ni-MH battery included was dead, and would not take a charge. I had the EN-4 battery pack professionally rebuild at a local battery shop and charged with my MH-16 charger. So far, so good. Put the battery pack into the camera body and nothing happened! No lights, no sounds, no indicators - nothing :-( I don’t suspect the battery as it meters out at just over 8v with a DMV after charging. I don’t have a Nikon EH-4 power supply. Does anyone have a pin-out for the front power supply input jack? Maybe I have a loose battery terminal connection? Any other troubleshooting advice is appreciated.
Try using a toothbrush with some drops of vinegar…and rub gently the battery terminals inside camera body
