Some times things just happen and I think not another issue with my Pilot side EFIS.
I can't believe the number of cracks and dry joints in this particular serial number EFIS has had, ( hang on, I better clarify something here, my plane has done just on a 1000's hours and the EFIS would be about 10 years of age, please read on), but the EFIS sitting right next to it in the same plane having done the same number of hours with the very next serial number, shows no signs of this type of cracking in the same places.
Yep, pulling electronics in and out of something does put stress on its components and wiring and this can cause issues and maybe this has helped cause this problem.
The other day, I turned the Pilot EFIS on and saw no readings for any of the sensors that are wired to the RDAC, but then after turning on the passenger EFIS which share the same RDAC, all the Pilot EFIS RDAC sensors came to life.
The first pic is of the 3 pins on the inside of the EFIS's rear panel that come through from the RDAC screw block, 2 pins supply the power to the RDAC and the middle pin is the signal from the RDAC. You may see the problem straight away and I think the bottom pin has the same thing happening.
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- EFIS RDAC Connector Solder PinsV2.jpg (225.59 KiB) Viewed 2129 times
This pic tells the story once you move the RDAC screw block a bit, so a quick solder of all 3 pins should make them good for quite a few years.
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- Rear EFIS RDAC Connector, Neg Power PinV2.jpg (200.58 KiB) Viewed 2129 times