Originally Posted by Alex Krasotkin
But I guess, that changing a sensor would cost a fortune...I wonder if they can put a sensor of M10.)
You can tell if the sensor is corroded by taking a picture of a well lit plain surface at a small aperture. Any spots will look a bit like oil drops on the sensor. Why not visit the Leica User Forum and do a quick search?
If your M9 is starting to show signs of corrosion ( or more accurately
, delamination), then Leica will fix it for free. By all accounts, when they do this, the camera is given a thorough service and any other issues such as your damaged display can also be resolved.
Here's the announcement from the LUF concerning the corrosion issue:
I think it would be worth your while contacting Leica and asking them for a quote.
All the best