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Showing posts from October, 2008

Trio Kenwood KD-1033 turntable main bearing service

  One of my first posts in this blog was regarding the servicing of the Pioneer PL12D turntable, and that has proven to be the most popular by a significant margin. The Pioneer PL12D had its competitors, and probably the most popular alternative was the Trio Kenwood KD-1033 turntable. I use both names (Trio and Kenwood) as the company operated under different names in different markets. In the UK they were Trio, possibly because the brand Kenwood was most famous here for food blenders. 95% of a KD-1033 is similar to  Pioneer PL12D, and servicing them is very much the same process. Both are belt drive , have an AC synchronous motor,  mechanical speed change , a main bearing, sprung top deck and rubber motor mounts. the KD-1033 uses a different type of anti skate mechanism, employing a thread and weight. The plinth is shallower with an internal cross brace. One aspect that is different is the design of the main bearing, and servicing it is a little harder than a PL12D. The Pioneer main b

Great Gadgets : Honeywell CM67 programmable Thermostat

A gadget which I think goes largely unnoticed by consumers and plumbers alike is the programmable thermostat. I have a Honeywell CM67 but the model has been superseded by the CM907. Worcester do a similar model- I'm sure there are others as good. You can get them for around £50 online at plumbing shops. There is a range called Heatmiser too, you can find these on Amazon.  These devices replace the room thermostat, which in many cases is the classic "clunk-dial" based on a bi-metallic strip. These old style stats are based on 19th century technology. Their strip is made up of 2 thin layers of different metals, bonded and when it heats up the strip bends due to the differing rates of expansion of the two metals and this forms the pole of a switch. Because of the phenomena of hysteresis, these types of system are slow to respond, and take too long for the stat to switch on or off. To compensate , they actually have a tiny heater in them and actually consume some power. The h