This replacement arrived with no damage to the ceramic exterior of the device. The edges along the square perimeter were properly sealed to prevent moisture from shortening the life of the device. Since the 12vdc device had no markings on either side as to which side is the cold or hot side, I had to hook the peltier device up to a 5vdc power supply. The red lead was connected to +5vdc and the black lead was connected to common / ground. Power was applied for only 3 seconds and quickly shut off. That short time was enough to sense with my fingers which side is the cool side and which side was the hot and side and without damaging the device from heat. Do not run this device with a power supply more than a few seconds without a heatsink mounted to the device! You will destroy the device, if you do.
After having found the cool side, I marked it with a sharpie. The defective moisture damaged device in the B&D refrigerator was removed and all of the old heatsink compound was scrapped off of the heatsinks. The new peltier device was mounted with the cool side towards its cool side heatsink and the same was done for the hot side (larger) heatsink using a modest amount of Arctic 5 Silver heatsink compound. The leads were connected up by color to the power supply, red to positive (+) and black to negative (i.e. common, "-" or ground) using butt splices. The B&D refrigerator was plugged in and allowed to run with the thermostat set to the coldest setting. The first couple of days, the temperature was 47 degrees. However, after the break in period of the Arctic 5 Silver compound, the refrigerator runs at 42 degrees at a control setting just above the lowest cooling setting (i.e. at nearly the warmest setting or the lowest power usage setting). Efficiency, and the temperatures, would be improved, if I had replaced the other device, which will soon be done.
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I got these and within 3 hours had them running with old pc heatsinks and fans. I got one down to 46* on 7.2v and to 37* on 12.5v within 5min! Awesome deal I will be buying more for my other projects!
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New unit works just fine. The new device is the exact replacement for the one that had failed within my 12 bottle wine cooler.
Honest reviews on TEC1-12706 Thermoelectric Peltier Cooler 12 Volt 92 Watt
I bought this for a class I teach called space power systems. It is great! i use it to show how thermo electric generators work. It helps people really understand the concepts.
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Bought the cooler to replace one that failed in a wine fridge. Works great. Arrived early. Would recommend.
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