jonoslack
Active member
HI Georgl
I think this was because in the past only Jenoptik had the mapping facility, so the boards had to be removed and sent back to Jenoptik. Now (as I understand it, and as Brad's mails suggest) Leica have the facility to do the mapping (and columns can be dealt with), so it's no longer necessary to replace the board.These effects can happen from one shot to another - most likely this particular sensor had no defect as it was tested. I was asking a Leica-engineer because I had the same problem with my M8 after about one year and got a new sensor-board, too. He told me that Jenoptik makes the sensor-board and therefore also selects the Sensors from Kodak, as I was told they reject 2 of 3 sensors from Kodak! Then the mapping is done and the finished board is send to Leica.
This particular effect seems to be more problematic because it effects the readout in a whole column instead of just one "dead" or "hot" pixel, it seems as mapping doesn't help - why would they replace a 2k$-board otherwise?