Question about Technics SL-1200MK2 Turntable

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When i turn my 1210s on both 33/45 switces come on and platter spins too fast

Both the 33/45 rpm buttons light up and the platter starts spinning and gets faster but both buttons when pushed don't do anything

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  • 432 Answers

Couple of options , but first cleanen the pithfader and variable resistor pitch vr3 i thought, it's an open one , he needs allways to be replaced, even technics says so and first clean the board, inside and on youtube and this side there enough movies and text how to do it, and check the pitchfader cables very good.

Posted on Sep 21, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Goodluck!

Posted on Jan 02, 2017

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djproaudio
  • 515 Answers

SOURCE: technics 1200sl pitch control

There seems to be 2 issues with this unit. Usually when the platter speeds up very quickly, one of the IC (integrated circuits) are faulty and needs to be replaced. However, I've never seen the 33/45 lights come on in addition. So, perhaps the issue started with faulty 33/45 switches, and it then caused a short to one of the IC's.

This will have to be professionally serviced, as it is not an easy fix. There are various circuits on the main board which control the drive, so it's a matter of diagnosing which is the culprit. The 33/45 switches will also need to be tested/replaced.

- TERMiNAL OPTiC
www.DJPROLAB.com

Posted on Apr 30, 2008

  • 6 Answers

SOURCE: technics sl 1210 will not start up

did you ever open the turntable. It sounds like the on/off switch is bad. Remove the platter and screws with a phillips screw driver and just make sure the connections are in place. make sure you disconnect the power first. let me know what happens afterwards.

Posted on Jun 03, 2008

SOURCE: Technics SL-1600MK2

Tonearm lift is probably a deteriorated belt. Google it, it's pretty common. The platter spinning might be due to a bad control board. You'll probably have to go to a repair shop to diagnose it.

Posted on Oct 27, 2008

Grubhead
  • 5259 Answers

SOURCE: turntable wont spin

If the mat lifts up to reveal a hole then you might get at the belt that way. I would have thought that the platter will lift up anyway. It might be held by a clip washer, around the spindle, from the top, sometimes hidden under a glued plastic piece. If you can't get in that way unscrew the base.

Posted on Jul 12, 2009

  • 5 Answers

SOURCE: platter or motor or what?

Been seeing a lot of problems like this on the newer decks. if the lights instead of moving smoothly are moving a bit, then stopping a little, then moving a bit more. or just wobbling a little bit usually has something to do with the motors... I have also just had to have mine replaced to was having the same problem.... expensive

Posted on Nov 12, 2009

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1 Answer

May Tag stackable washer model: MHWC7500YW.


A. Put unit into "clean washer". Press "Cancel" 4 times. Unit should ramp up to a medium spin, about 500 rpm and then coast to a stop.
B. Once the unit is done, turn it off.
C. Put the unit back to "clean washer." Press the "Start" button 4 times quickly. Unit will now go into a self test and error codes should pop up if there are any to display.
Now that the unit knows what zero and 500 rpm is, it should be able to ramp up to the right spin speeds at appropriate times

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Is ther anythng I shud be worried about if my pc fell off the top shelf and is stil working properly


Check to see if your pc has a SSD drive (Solid state Drive).
If it does and it still works.... you should be good.
Reason: SSD units have no moving parts.

Non-SSD drives have spinning platters.
Any hard drives listing rpm's (Rotations per minute) spin at high speeds. Example: 7200 rpm's
A drop like that could cause the heads to crash into these platters.
Just watch to see if data starts to disappear or the pc acts really slow. The good news, most hard drives with rpm listing made recently park the heads to prevent damage from drops or sudden bumps.
Good luck and hope this helps

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1 Answer

Technics 1200 fault where both the 33 & 45 buttons remain lit, the platter spins at super speed,start stop button doesn't work and the red light is not on


Did you try to de-assemble and clean the contact of this button with contact cleaner, take care to not shoot on rubber parts if you have near the contact, it would blown up !

Apr 28, 2014 | Technics Audio Players & Recorders

1 Answer

Failed (Error code: WCD44-RSI)


Oh I know! Pick me, pick me! (Lol!)


You mean WCD-44-rm5?

Spindle test. Actually finding out if the spindle motor is spinning the Spindle, at the maximum spindle speed in RPM's, the spindle is rated to spin at, (At maximum spin up)
Also a few other quick tests.


!O_O!

Basic construction of your harddrive. IDE (PATA) or SATA;

Inside the harddrive's case are;

1) Platters: They resemble CD or DVD disks, and are usually made of metal, or glass.

The Platters are coated with a magnetic medium. (Ferrous substance. Think Iron )
There may be 3 to 6 Platters, or more, inside the harddrive case. They are coated on both sides with the magnetic medium.

2) Spindle, and Spindle Motor:
The Spindle is part of the Spindle Motor. It is the shaft of the motor.
Comes out of the Spindle Motor, and the Platters are attached to it.

The Spindle Motor is designed to spin the Spindle (Shaft) certain Revolutions Per Minute, when called upon.
The maximum RPM's it will spin is stated for the harddrive unit.

Older harddrives were rated at 5400RPM.
(Slower before the above time period)
Newer harddrives usually spin up to 7200RPM.
Gamer type harddrives may spin 10,000 or 15,000 RPM's.

http://www.behardware.com/articles/727-1/western-digital-velociraptor.html

3) Read/Write Head:
The magnetic medium on the Platters, is arranged by a Read/Write Head.
There is a Read/Write Head above, and below, every Platter inside the Harddrive.

The name indicates what the Read/Write Head does. When the Read portion of the head is activated, it reads what is ON the Platter.
When the Write portion is activated, it writes TO the Platter.

(The magnetic medium is arranged, by the Write portion of the Read/Write Head. It is arranged in a series of 0's and 1's.
0 being OFF, 1 being ON.
This is changed into Machine Language the computer can use )

4) Actuator Arm:
The Read/Write Heads are attached to an Actuator Arm.
The arm swings the heads back, and forth, across the Platter's surface.
(When called upon it can swing the Read/Write Heads back, and forth, at HUNDREDS OF TIMES A SECOND. -> HUNDREDS )

5) The Actuator Arms are attached to an Actuator Motor.

The entire assembly above is encased in a.....case.
It is assembled in a Clean Room. A room that is 99.9 percent dust free. The outfits the assembly technicians have to wear resemble a NASA space suit. They have to walk through an air corridor, and be b-lown off by air jets, before they can enter the Clean Room.

The harddrive's case has a small filter on it. This helps keep the atmosphere inside the harddrive, as it is outside the harddrive, but with NO moisture, NO dust.

On the bottom of the Harddrive case is an electronic circuit board. Controls the hardware inside the harddrive case, and is connected to the motherboard.

The Spindle test is to see;
1) If there is any axial, or horizontal runout. That is to say if the Spindle wobbles, so to speak. If so the Spindle Motor bearings are bad.

[Platters have to stay Dead Level. The Read/Write Head is spaced off of the Platter, by about .00003 of an Inch.
(3 hundred-thousandths)
May be closer my figures could be off,
In comparison an average human hair is .003 of an Inch thick.
(3 Thousandths)

Due to the speed the Platters spin at, and the closeness of the Read/Write head to the Platter, the Read/Write Heads actually float on a cushion of air, when the harddrive is active.

When you hear or read the term 'Head Crash', it means one, or more of the Read/Write Heads, has touched a Platter, (Or Platters), and wiped off some of the magnetic medium ]

2) Spin up speed. How long it takes the Spindle Motor to spin up to the required RPM's. Actually, how long it takes the Spindle Motor to spin up the Platters, to the desired RPM.

Doesn't reach the RPM goal? Spindle Motor bearings are probably bad. (Or a failure in the electronic circuit board, on the bottom of the Harddrive. Doubt it. Usually just fails altogether )

A) http://computer.howstuffworks.com/hard-disk.htm

B) http://www.youtube.com/watch?v=s8-pHHv9LYQ&feature=fvwrel

Point?
The test indicates your harddrive is going bad. I would (Pronto) copy off my personal information. (Disk/s, thumb drive/s, storage on the internet, etc)

Regards,
joecoolvette

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4 Answers

Platter/motor won't turn


I don't know the answer, but you have written one of the finest, most comprehensive problem descriptions I have come across. In mechanical scenarios, that is priceless. I'm sure a turntable guru will see it and go, "aw. I know what that is". Good Luck.

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