DEW indicator / battery
The solder joints to the DEW Sensor were "cold joints" which means that the solder joint is defective - is not a sound joint. This means that with temperature variation, the solder joint can intermittantly separate and break the circuit, causing the DEW Indicator to come on and completely shut down the camera. The first problem I had with the camera was on a cold day, so it seemed to make sense.
Here is a picture from the perspective of the tape cover being at the top of the picture and the rest of the camera at the bottom. The dew sensor will be on your left.
(if clicking on the link doesn't bring up the picture, copy and paste the link into your browser)
Then, get a real slim soldering iron with a fine point. Open the tape cover and take the tape out. Get a strong light to shine down into the mechanism.
If your camera is like mine was, you may see a brownish material on or around the solder joint - this is flux used in soldering which was applied too heavily, and not heated long enough to burn off. The joint therefore doesn't quite connect the dew sensor to the terminal post - depending upon heat/cold ambient conditions, sometimes it makes contact and sometimes it doesn't .
If your eyes happen to be elderly like mine, I put on one of those magnifying head-bands. Heat up the soldering iron - make certain the point is tinned (has a thin film of solder on it). Carefully just touch each solder joint for a couple of seconds - just enough for it to melt, and then quickly remove the soldering iron. You don't want to leave the iron in contact with the solder too long or it may melt other insulation around the terminal. This all probably sounds more complicated than it really is - but it really is just a 5 minute operation. If you've not done much soldering, and feel uncomfortable about trying it, you may want to take it to a radio, tv or computer repair shop and ask them to do it for you.
A couple of TEMPORARY fixes which have been reported:
1. Sometimes removing the small CR1216 battery which keeps the time display, and apparently also powers the dew sensor will get it working again, though most report it only works for a little while. When you remove the main battery, this little battery is located under a small plastic slide at the upper right of the compartment.
2. One person reported that out of desperation he put the camera in the refrigerator for 4 to 6 hours and that it began working again.
3. Another said: I wrapped aluminum foil around the contacts in order to lower the resistance and it worked.
4. And finally, another person reported cleaning the contacts with a cotton swab soaked with alcohol, got his camera working again.
You may want to try some of these other reported fixes, however remelting the solder joints are more likely 'the long term fix.'
on May 06, 2011