Hi Peter,
Sorry to hear about your issue with the camera. Did you mean negative 13.5C? Maybe it is interference from the power supply or voltage supplied in inadequate? Or the cable is damaged?
Might be worthwhile sending the image to SX. Guys at SX are very helpful - recently I accidentally fried my Lodestar and it got fixed and shipped back to me with FedEx from the UK free of any charges...it does not happen very often in this materialistic world.
Good luck Peter and please keep us posted
