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Nikon MD-12 Grip that is a PAPERWEIGHT - Help

17 Feb 2013 5:04AM
I tried doing the contacts with a coin on all angles of play. Nothing.

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66tricky 11 742 Scotland
17 Feb 2013 10:11AM

Quote:Nick has just reminded me of something. There's a retractable plastic pin in the remote release connector that tells the drive that the cord has been plugged in. I can't remember whether the release button is disabled when a cord is plugged in. Squirt a little WD40 into the socket and check that the pin moves freely. Gentle use of a bradawl should free up the pin and that might cure the problem.

My memory is hazy because it's more than a decade since I used an MD12.

Avoid using wd40. It eats polycarbonate and some polystyrenes so unless you know that the pin and neighbouring components are not either ( polycarbonate is widely used in injection moulded structural parts) thenI wouldn't risk it. I dissolved the polycarbonate on a battery cover door once before I was aware of the issue.
18 Feb 2013 8:42PM
Thanks for the tip, greatly appreciated!!

THe is nothing wrong with the pin on my drive. It is actually metal. I have machine oil, I would use that first before WD40 as you would only need a tiny drop.

So, looks like it may be time to look inside!
Sooty_1 7 1.5k 221 United Kingdom
18 Feb 2013 10:20PM
You shouldn't need any oil. The bearings and gears in camera equipment are lubricated with very tiny amounts of grease (usually graphite) and introducing more is a big no no.
If dismantling, use a digital camera to make visual notes as you go along.
19 Feb 2013 2:10AM
Good tip. Very good idea! You have been a big help so far and I am grateful for your assistance. Thank you.
21 Feb 2013 1:36PM
Really good news!

I fiddled with the drive sprocket and the metal pin dropped INTO the housing. I then did some more scraping on the pins, changed the batteries to a brand new set (second new set) and guess what!!!!

Puuuurrrsss like a kitten!!!!


Thank you for all your help. I was lucky that I did not have to disassemble it. I greatly appreciate the time you all spent on this Nick, theWilliam and 66Tricky.
bola_dor 5 1
6 Feb 2015 3:53AM
Hi, I know this is an old post but I have a similar problem with my "new" MD-12 that came whit my also "new" FM2.
I all ready followed all steps in this thread but with no success.
basically when I short the four contacts motor turns half round, shutter pin pops but it remains up and then it stops making a noise as if it is stuck.releasing the contacts and shorting again "unstuck it and the pin pops in,, and turn a half again but not always...
battery contacts are well cleaned and I can meter 12.2v between the two contacts to the right (watching from behind) ..
any help with this??

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