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Day: October 16, 2009

Corroded Bryant CES0110057-01

Published October 16, 2009

My coworker Brian’s furnace went out and during troubleshooting he came across a bunch of water deposits on the Bryant CES0110057-01 control board, as seen here (full res). I first suggested that he clean the deposits off with vinegar, but after doing so he found that one of the jumper wires on this single sided PCB seemed to have corroded in half, as seen above or here (full res).

He asked that I take a look at it, and in doing so I decided to replace it and the jumper next to it, as seen here. I touched up one other iffy looking solder point near the bottom of the board, but otherwise everything else looked good. He’s taking the board home to try now and hopefully this will fix the problem. A new control board for the furnace is $140, and it’d be best if he didn’t have to pay that.

UPDATE: I’ve been told that repairing this jumper fixed the problem. Yay!

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CO2!

Published October 16, 2009

Danielle brought me a box 1/3 full of dry ice today, as it was left over from a shipment they received at the lab. Thus far I’ve placed it in water, put it in soapy water to make a bubble tower, drowned it in apple juice (and drank the juice), and lowered burning magnesium into a sink full of CO2. The magnesium sputters a bit before going out, and the juice tasted nicely acidic with a bit of carbonation. Now to figure out what else to do with it.

It’s being stored in a foam box, in a cardboard box, on the front porch. I imagine there will be plenty left to play with tomorrow after work. Now to think of things to do. Ice cream is an option, although I’m not sure of that one yet…

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