Alright Mike, I did another quick Search. Used is going to be your best bet to replace the sensor. the Aladdin system apparently has not had replacement parts for a very long time. I would first try to take the sensor to a local Television / electronics workshop. If not a Television / electronics shop, a local electronics or radio club. Tell them that black doesn't work in grey position, but Grey and Black both work in black position. Tell them the circuits on the board will likely be similar and maybe it's a simple component failure. They may be able to figure out and get it working again. I suspect that's going to be your best solution to fixing this sensor, because I think your going to find it hard to obtain a replacement unless it's from a derelict.
SEE-Level may be a good replacement for the direct fix of your problem. But so might be putting a toggle switch between the Grey and Black sensors and switching between them using the working half of the sensor unit. But what happens if other Aladdin pieces or parts fail? fixing those failures with specific function replacements, and you start getting a Hodge-podge of individual systems.
So to answer Darrell Terry's question: "What's next?" You might think about replacing.... -Aladdin. to SilverLeaf
Here is a link to someone who had one of the Aladdin components stolen. Broken is like stolen it's not there/doesn't work. And it seems to me, that there are a lot of advantages to upgrading to SilverLeaf. SilverLeaf was an automation solution used in Beavers. I have one on my coach for monitoring the engine and transmission. But reading into this system, It can use the EXISTING wiring harness and you apparently can upgrade this thing all the way up to multi-camera video monitoring. It pulls you out of the "what's Next" scenario and provides you with a solution with expand-ability, and upgrade-ability.
http://www.silverleafelectronics.com/node/5697Now of course, I think you should try to find a replacement module, and if you find one at Az Salvage- I'll save you the trip and go get it myself and ship it to you if needed (Live in Phx). But if it can't be fixed, and can't be found, maybe upgrading the control system to SilverLeaf might be the answer. It sounds like SilverLeaf has went to some effort on their part to provide a solution to those of us with antiquated and failing Aladdin control systems.
http://www.silverleafelectronics.com/node/4163Best of luck!
