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Message: <blockquote data-quote="easysat" data-source="post: 20288" data-attributes="member: 175305">The SAW resonator insertion loss in the tuner degrades faster if it is overloaded and at a high temperature. In theory a fan could help by keeping temperatures lower but I haven't seen any proof in the form of measurements of the temperature reduction in the tuner. I think it is easier to make sure that the box is somewhere where there is a good air circulation, i.e. don't hide the Amstrad in a closed TV cabinet and beware of piling other boxes on top it. If the Grandata kit fixes the problem, I think you'll probably be OK without a fan. The resonator insertion loss is already degraded but it should stabilise (AFAIK) at this higher value and not increase any further.</blockquote>