Question about Targus Chill Mat PA248U Laptop Cooler

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Cooling fan not turning on

I just purchased this cooling mat and plugged it into my computer through the usb drive but it won't turn on. Both sides are in fully, but not even a breath of air.

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There is a problem with the power supply cable that I have found in several of these. The wires break or short at the plug. You can purchase a replacement Multi-volt power supply from Walmart, set it for no more than 5 volts and plug it into the fan. It will work. I actually have mine set at 1.5 volts. Another problem with this could be that the USB port you are using is not coming on or has shorted out. Test the port with a thumb drive to make sure it still works. If it does then use the external power supply.

Posted on Jul 11, 2010

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Posted on Jan 02, 2017

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Do you mean the USB-ports on your laptop? If so, than yes, you will need one free USB-port to connect the Chill Mat to.

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I opened the case and hard wired the power cord directly to the wires of the fans. There are 4 philips-head screws at the four top corners under the rubber adhesive pads. Separate the top from the bottom. Two wires come from each of the fans. Cut and twist the two positive wires together and the two negative wires together. Cut the end off the power cord that is NOT the USB end and strip the wire insulation back. You will find a white insulated wire surrounded by another wire. Twist the ends of each separately making sure they are separated by the white insulation. Remove the circuit board using the tiny screws where the switch is and put the power cord end through the switch hole. Tie a knot in the cord to prevent cord from pulling out. Make sure the USB end can reach a USB port on your computer. Carefully test which wires to twist together by touching each to see if the fans turn. One way will work and other way won't. When sure of correct wires, you can solder them together and insulate properly with small wire nuts or electrical tape. Reassemble case with screws and plug in USB cord end when you want the fans to cool your notebook computer. I hope that this helps.

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