M240 shutter sticks at higher speeds on first frame

[mgermana]

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Hi, all. My trusty M240 has a new shutter problem. I'm trying to figure out if this is a mechanical issue that a CLA will fix or if it is an electronic problem that will be cost prohibitive to address. 

When I turn the camera on and take a picture at a shutter speed faster than 1/750, the first frame is overexposed by about a stop. Subsequent frames are properly exposed. If I turn the camera off and then back on again the same thing occurs. This isn't a problem at slower shutter speeds.

FWIW, I was running the previous firmware when the problem started, and I have since updated to the current FW. But the problem persists.

Any idea what's going on here?

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[sdk]

Try a full reset? If that does nothing it may be time for Leica to service it, or to consider an upgrade to an M11.