Originally posted by Rekusu However, today I thought to give them a bit of a workout to ensure the mechanism is still working. 67, no worries but he 645 is a different story.
The battery holder is made to be the weakest link in the chain and the pressure from the contact springs has basically caused it to fall apart.
Does anyone know of (may be?) a Chinese company or any other, that makes this item? Or is there a well known 'fix' that I have yet to discover?
With care and patience, I've been able to clean and use Loctite 681925-6 Super Glue Plastics Bonding System with Activator, 2-Gram Tubes to fix my 645 battery holder.
Over the years, it has developed 5-6 cracks. Sparingly glue one crack at a time and use a clamp and let it set for a day. Then work on the next crack, etc.
When finished, I opted to only put in lithium AA batteries because:
a) They will last longer and thus not need to be swapped out as often which could damage the holder again.
b) They are lighter than alkaline equivalents.
c) I've had alkaline batteries swell and damage the holder in the past. I've yet to see that happen with lithium cells.
If that doesn't work, keep your eye out for a used 645 in "As Is" condition; it may have a fully functional battery holder.
In the meantime, you can always use your 645 in full manual mode, with or without the grip, and use the Sunny 16 rule, a light meter app, or a handheld meter for exposures.
With only one shutter speed it's the ultimate challenge, but with the right mindset, there's something very zen about it.