<p>Dear all, I have another Topcon question... I'm really trying hard to love Topcons as you can see, but I ran into trouble again. Yesterday the Auto Winder S arrived, which I bought for my other Topcon camera : a black Super DM. The winder is NOS and in mint condition and came with the base protector plastic, box, inserts and manual. I attached it to the camera and when switching the winder on it arms the shutter and advances the film, but the red LED stays on and then the shutter release button is blocked - no release possible unless I switch off the winder again. I tried different things to no avail. What does work is removing the camera battery cover : then the winder works perfectly, although the user manual doesn't say that the battery cover needs to be removed before attaching the winder!<br /> What happens though, is that (without the body battery cover) the meter occasionally gets no power : the meter needle drops to the extreme left and stays 'dead' until you tap the whole unit. When the meter does work, the needle has a tendency to behave wildly (jumpy). Maybe the meter gets too much power from the four AA cells in the winder?<br /> The supplied user manual seems to be the one for the Auto Winder (non-S version), but perhaps Topcon never printed one for the 'S' version?<br /> Can anyone confirm that the camera battery cover needs to be removed?</p>