List, This issue of ETD heat problems reminds me of a problem I had with a certain model of laptop pc. I'd like to share this to help others avoid the problem, and expense. I used my trusty Sight-O-Tuner for many years. It was finally time to upgrade. Being a computer-type person with a lot of experience using Dell products, I decided to try the familiar "Latitude" Cp-series laptop. TuneLab Pro worked great. The Laptop worked great.. ..on battery power. The Dell "Latitude CP" laptop computers have the capability of using dual batteries. I couldn't afford the second battery yet, so I got into the habit of just plugging the laptop into an AC outlet. After about an hour, when the battery was once again fully charged, the cooling fan would come on. Well, I do aural checks, and that litle miniature fan is so noisy that I couldn't hear properly! At first I thought I was just having a bad day, but the noise problem persisted at other tuning jobs. It only happens when the laptop is plugged in, when the battery reaches full charge. This is not an isolated problem. I now recall the noisy fans, but the conditions in a 400,000 square foot manufacturing plant usually masked the problem! In our profession it is a real problem. I have since switched to an older model IBM Thinkpad and all is quiet! Regards, John Peterson Raleigh, NC Peterson Piano Service pianotuner@bellsouth.net
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