Wet but fixed Thermapen

I've been working (prep/line cook) in a Corporate Cafe recently that feeds 2-3K a day and has 30-40 cooks.. As far as I know I'm the only one with a Thermapen.. so it gets lent out a lot. Yesterday I lent it out to someome to calibrate their dial thermometer.

Next thing I know the case is sitting half way submerged in ice water... it then starts reading numbers that didn't makes sense... this morning I fixed it as follows:

Removed the two stickers and the three screws below the stickers. This splits the case.

Removed the two screws holding the circuit board and removed that part.

Used a blow dryer on cold air to dry any wet parts.

But it back together and it reads 211 in boiling water.

John;
I have a Thermapen but haven't had to do this, as yet.

I appreciate the information. Who knows? "Stuff Happens"!

Dale53

that sucks - thought they were supposed to be waterproof...

I do a lot of electronics repair work (my shop does anyway). Sometimes the water will cause corrosion on the board, conductive contamination between the legs on the IC chips. You can use a little mineral oil (we use deoxit d5) on the board to clean & protect it if you notice issues in the future - just scrub it with a toothbrush then blow it dry w/ compressed air. You could also use electronics-grade isopropyl alcohol, don't use rubbing alcohol though, it's as bad as the water on the board in the first place.

Mine was the older version (Not water resistant) that was sitting in water.

My new one's instructions (just a couple of weeks old)say to NOT submerge it. It is just "water resistant"...

Dale53