Bialetti

I had great difficulty first locating what type of power/volume potentiator the GMX A-2.1 control module uses but did find out and also was able to order one from an eBay vendor in Hong Kong. Identifying and sourching the potentiometer: Panel PCB Mount Dual Step B50K Moon D-Shaft 6mm Switch Rotary Potentiometer,P010Purchased from eBay vendor hongkongsuperseller, $2.88. Also described as a B50K dual-ganged 6mm moon D shaft switch rotary potentiometer. Replacement: Disassembly of the old switch requires a clip and some soldering skill. I hired a friend to do the job for me (as opposed to buying more equipment). Anyone with a moderate level of soldering skill should be able to do the job. If you're a beginner, don't even try it. Good luck!

Where to get CP-1 potentiometer switch (on/off/volume pot) for Promedia GTX A-2.1 Control Panel. This is a 50K dual-ganged 6mm moon D shaft switch rotary potentiometer. Original dimensions: Overall height: 1 3/8" D post width: 6mm 6 connectors + ground Could not find the part locally but found an eBay seller, "hongkongsuperseller", who had the part described as "Panel PCB Mount Dual Step B50K Moon D-Shaft 6mm Switch Rotary Potentiometer." Link here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120829404966 Total price shipped from Hong Kong was only $2.88! Had a tech friend solder the new switch in. All connections correct. Minor difference: D shaft is a few mm shorter than the original. May cut down the knob for a better fit. WORKS BEAUTIFULLY! Full performance restored with no static, buzzing, etc. Urge you to get this switch yourself and, unless you are an expert solderer, would defer to one as it is on a sub-board soldered 90 degrees to the main board. I didn't have the tools or experience. Good luck to you!