My Gemini TT 02 gets stuck at 45 RPM. To get back to 33 you have to turn off and on again. Also the pitch is wildly out by about +7. Is there any way I can repair this?
Your terminology confuses.
Point 1. Why to you say, "Stuck?" Does it not make sense as a possiblity that the designers sought to prevent rotaton speed from being changed mid playback, especially on, say, an LP (long play) album with different side (stereo instead of 45 monaural) grooving. What would be the imperative of changing record speed in that manner...only one record type will play at a time. If changer, only one type record seriies can be played, all at the same speed.
Point 2. ...about "pitch...wildly out by about +7.
First, what are you meaning by pitch and by + (not -) 7. Since there is, to my knowlege, no record spin criterion known as pitch, are you referring to spin speed; hence to playback sound frequency, whether steady state or variable? If there is no user control of platter rotation speed on your unitn there would be little you can do other than to ensure all parts above and below platter are running smoothly with no drag or interference...possibly even lightening the record load on the platter, if a changer; and making sure records are clean to prevent slippage by washing with water or soap and water and air drying--avoid label. If your turntable is optically speed controlled (by timing marks on platter rim) those are typically adjustable to hasten or slow platter speed and therefore playback frequency pitch to your liking. "Wild variation" could reflect mechanical impedance as indicated above. Also check for record warping by trying known true record playback. Finallly, wild variation could be indicator of platter motor end of life cycle. Start pricing a motor if nothing helps.
I still don't follow the significance of the speculative(?) 7. Please explain if possible.
Sep 27, 2014 |