Cobra Depth Sensor STB, but not how I expected.

[rfwoodvt]

My backup Cobra started beeping after my last dive, showed "Er" and randomly flashed various depth readings.

Took it to the bench and pulled the puck from the housing, opened up the sensor cover to see if maybe something had encrusted the sensor area. Sure enough I saw a black speck on the sensor cover membrane. Took a q-tip to it, gently swiped and the whole membrane had stuck to the q-tip. Almost like the membrane turned to sticky glue.

Since it was nearly 20 years old am guessing old age finally caught up to the polymer and it degraded.

She owed me nothing, that's for sure.

 

[BoltSnap]

Time to buy a new dive computer!!

 

[nydivetripper]

My Cobra went bad last week on me too.
Never entered dive mode or showed me at depth.
Randomly, during the dive it started beeping. Showed me that I was at 475 feet of depth .
There was a recall for the depth sensors that I found out about. I had hoped mine might not be one of the bad ones.
Time to shop