The initial stage to try of cleaning the dew sensor the correct way without damaging it has been sent via DIRECT e-mail, however if this fails then there is no option but to disable the sensor, as although another procedure exists of blanking off the memory it cannot really be guaranteed in the same way as disabling the sensor. Anyone else that may be thinking on attempting this please note below. ------------------------------------------------------------------------ - AN IMPORTANT POINT CONCERNING THE MODIFICATION - The instructions given are really aimed at technically minded people of a "practical" nature who are acquaint at working on smaller electro-mechanical devices of a precision nature, or who have a flair for this sort of thing, and so in the interests of not making the situation any worse I would strongly advise anyone who does not really come into that category NOT to attempt this work, as it involves separating the case and the unscrewing the main circuit board to gain access to the board below it, this requiring the disconnection of ribbon cables etc, it is also necessary to carry out the precision soldering of two "very" narrowly spaced PCB pins, so the possession of a fine tipped soldering iron is also absolutely essential! So taking the above into consideration the qualification mentioned is really a MUST!! It should be emphasised that there are NO shortcuts into getting over this problem other than what's been aforementioned, and even if the memory reset does affect a cure it can only be adopted as a stop gap measure as the CPU could lock up again at some point in time, and unfortunately in many instances does!!