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My Gemini DJQ 1500 turntable spins extremely fast (much faster than the 33 or 45 RPM selection). It used to work fine. Speed selector buttons and pitch adjust slider seem to have no effect; the start/stop button still works. No apparent physical damage to the unit. The previous time it was used (about a year before), it worked normally, and was not moved from its position and connections since then. If nothing else, having a service schematic for the turntable would be helpful, rather than trying to trace the entire circuitry myself.

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With no power applied; soak your slider switch(s) with alcohol; then: move the switch(s) back and, forth rapidly to clean them of dust/lint
let dry completely and, repower/test.The turntable should now work correctly.

Posted on Oct 05, 2009

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1 Answer

Turntable spinning to fast


Clearly an electrical fault. Could be something to do with the power supply or the speed control circuit, or even the motor itself.
For the manual visit the Gemini website.

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Plays too fast


I had this same problem. You can adjust the speed, although it is a bit of a pain. If you turn the unit over you will see two little holes on the bottom labeled "33" and "45". You will need a small (jewelers) flat head screw driver. If you put the screw driver in the hole you will encounter a rubber cover. Push the screw driver through the rubber and go down a bit further and you will feel a screw. Turning this screw to the left (counter clockwise) makes the speed slower. Turn the screw to the left to make the speed faster.

For a picture you can download the service manual:

www.eserviceinfo.com/downloadsm/24072/Aiwa%20Service_PX-E860.html

You can check the speed visually by downloading a strobe disc (I found one I like at http://www.extremephono.com/free_turntable_strobe_disk.htm). To actually be able to see the strobe you need to do this under a lamp with a single fluorescent light bulb (fluorescent bulbs actually flicker a little bit at the same frequency as the electric supply).


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