The platter on my vestax table, with or without a record on it, spins unevenly. At all speeds it spins uneven, when you get eye level with it and look straight at it, the platter moves in wave motions. These are my first tables to I'm pretty new to the scene, and so have no idea what the problem is.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Is it just the matt that records sit on that's the problem or the whole platter?
If it is the matt you can peel it off and get a new one from somewhere such as as Amazon. It doesn't have to be the same brand as the turntable as long as it fits on.
Just search for "turntable matt".
If the platter is the problem it might be caused if the platter is plastic by either a chemical or heat warping the platter. Has it been exposed to the sun for example? Some chemicals such as oil and polish can cause it to bend out of shape.
It's likely if the platter has warped that it will need to be replaced.
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.
Well, you have the rotor, which has above the conus where you put your platter on. But the rotor needs to be kept in space, so it can spin,
which offcourse in the is done by (too soft) bearings, but the bottom of the the rotor(which looks the same as the 'pin' where you put you vinyl on, just leans on a piece of metal, instead of a technics where it falls in a shaft too keep it is place.
You undestnd that the strength on the bearings of a st150 is much higher, especially when scratching. Besides that, the high torque works 0,2 sec and then an optocoupler samples the speed of the rotor. And it's easy:on the underside of the rotor ,there's a plastic round disc puled over the rotor and kept on his place by a plate and 3 screws, with on the outside just
Your turntable belt is off. Remove the c-clip holding the platter to the center spindle. Remove the platter and turn it bottom side up, place the rubber belt around the platter and fix it to the little post sticking up on the outer-edge surface. The little post holds the belt to the platter while you turn the platter over and put it on so that the post points right over the motor pulley. Turn the platter by hand either clockwise or counter-CW and the belt will pop off of the post and land on the motor pulley. One drop of oil on the center spindle for lube and fasten the e-clip back on. Of course, the tone arm might not be actuating the power switch, you can address that with the platter off as well. Good Luck.
Do you keep the platter at one place --> don't you let the platter spin and keep the record at. one place, you are know f.5;5,g your engine and parts.... buy suzuki slipmats and use the plastic rounds of plastic .... i thought by thud rumble too let your table spin when you hold the the platter, otherwise components get to hot
If you can turn the platter easily by hand, then so should the motor. You can also disconect the power leads to the motor and hook up a PP9 9 volt battery to it. If it\'s slow and easily stopped from rotating then there\'s nothing wrong with the power to the motor and the motor is bad!
Remove the felt on the platter and lift the turning platter of the centre guide pin. Please note where the belt is running, because you will have to place that into the same possition as before. Check for any dirt or debries. Clean out and replace table and belt. Hope this helps
I think the platter on these is an "interference fit" it is just dropped on the spindle and sits there by virtue of a taper..Take the mat off, put your fingers under the platter rim and hold like a steering wheel and try to prise it up, but don't force or pull unevenly it might come off , if not ..... Whilst you still have it under tension get someone to lightly tap the centre spindle with a hard( non metallic) object ( I use a screwdriver handle) and that will free it.. Once off, place new belt on the inner rim ( it should stay there!) and replace platter on the spindle... Reach though one of the holes in the aluminium platter , grap the belt and stetch it over the motor pulley making sure it sn't twisted or fouling any guides or screws.. Spin the platter to make sure there are not rubbing noises... Replace the mat... You are done..
There are two motors with beige/tan plastic covers over them, one on turn table platter and the other on the record changer mechanism table. Take the cover off the one on the turntable and spin the motor by hand. Depending on how you spin it the arm will either go back up or down