Last week I was given a B&H 70DR with a bunch of lenses. I started out be cleaning the lenses and camera body and started to do some testing.
The first issue is that the speed at 24fps is not stead, I can hear it fluctuate and it ramps down to 0fps close to the end of a wind, I'd say about 5 seconds before.
The other issue, a major one is that although the camera runs, it won't run when I wind it too many times, it will run when nudged with the hand crank, but only for a few frames here and there, sometimes not at all, other times it will run for 2-3 seconds and stop again, until it is helped by the crank. If I wind it a few times it runs fine, wind it too many there is a 5% chance it will run. When it does run and runs down I need to nudge the shutter closed before it will run again, it doesn't "reset" when I wind it as it should. However it did once, but that was it.
I oiled it at all 5 points and ran it via the hand crank the distribute the oil but that doesn't seem to do any good.
Can anyone point me in the right direction, and input, ideas or a repair manual? I'm not about to go pulling it apart especially the mainspring housing.