ENOUGH IS ENOUGH - L-Nav & S-Nav owners at one phone call a week!!! These units both have an internal 3 volt battery - I suggest all owners pick up a CR2032 battery (smaller and thicker than original but fits) button cell at the supermarket checkout for $3.50 and remove cover yourself and replace if original has unknown history. When it fails you get crazy performance and you loose your polar information. When you replace same it reverts to ASW20 glider so adjust CALIBRATE page. Please read Manual and your vario and ASI offsets may need adjusting as well. We check our ASI in a form 2 but people forget to read the L/S-NAV ASI in the CONFIGURE page1 When finished write on case "Replace internal battery 2015" - it may last 12 years!!!
Please tell others in you club of this one and before next flight PLEASE CHECK this battery. While on any cambridge C,M, L, S NAV it may be worth raising the eprom (chip in socket with paper lable) 1mm each side and pushing especially if glider is stored on coast or there has been much wet weather. Model 20 loggers also have same battery but this battery can be read from front screen (or in your PC if you have a blind logger) The battery for this is under antenna and so long as you remain connected to 12v power during changeover the logger seal is not lost. Use the cardboard with the battery to slide and battery out. At the moment Australia Post are just benefiting with the sale of 2 extra express bags a week to and from me at $21!! Am I frustrated - yes I am!! Could somebody in each club please post on their clubs email list *and my blood pressure may improve!! * Old Ian McPhee
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