Originally posted by Flumpy_Wumpy Thanks for the help.
The rewind button is not stuck in, and the frame counter goes up every time the lever is cocked, even if the shutter isn't fired.
After messing around with it for a bit I found that after cocking the lever, if I lightly press on the shutter release button without firing the shutter, it then locks the wind lever like it should. I can only assume that there is a lever inside that is a bit stiff and not moving int place until prompted by the shutter release button.
Does that make sense?
If I can manage to take apart the camera and find the issue, what sort of oil can be used to lubricate it? I have some 3 in 1 and some sewing machine oil.
Thanks again
Silicone spray. Take off the bottom cover, be careful not to lose any bits. Don't turn it over or things like the rewind button will fall out . Either use the spray tube or spray the silicone on a needle or similar and drip it in in small quantities on any gears and bearings you see. Unlike 3in1 etc. it won't rot plastic parts and it seems not to go sticky with age. I've resuscitated several cameras like this. I haven't needed to go any deeper into the camera than that. You may need to use the lever in the mirror box to reset things. (the one on the left, looking from the front.) . The wind lever and shutter may need a few cycles to get everything worked in.
If you still have a problem, open the film door and look at the shutter curtain. If you can see two arms and rivets VERY GENTLY move the curtain up (fingernail is the ideal implement if your hands don't shake) and release it. It should flick right down so only one rivet shows. Don't try this step on the precious camera you have inherited from your beloved granddad because the shutter curtain is very easily damaged.
This is a quick and dirty remedy of course, and if the light seals are also manky and you want to keep the camera for the next 20 years send it off for a proper CLA. This is supplied without warranty and your mileage may vary, etc.