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About nedclack

  1. I've been asked to repair a Powertech 3. It's fan blade has fallen off the shaft. I pushed the blade back on and it's quite tight but I presume it's going to fall off again. The amp seems to operate normally but the fan does make quite a loud noise as it runs. I don't have a similar amp to compare the noise with but it sounds quite rumbly. On the inside of the bottom case cover there are many droplets of something formerly liquid around where the fan was lying but they don't to me look as if they were thrown from the fan blade nor is the blade dirty or sticky. In fact the whole amp's very clean inside which suggests it developed this fault quite early in its life. Does anyone here have any experience of this please? Many thanks Ned