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Faulty platter on old technics cd player SL-770 - are spares available ?

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  • Technics Master
  • 54,195 Answers

Maybe, but not from fixya.

Posted on Sep 17, 2019

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 515 Answers

SOURCE: How old is my Technics SL 1210 Mk2

Here's some information for you. Since your unit is a SL1210MK2, it may be harder to determine the age of the unit:

It is possible to tell the year (and the month) when the SL-1200 was manufactured from the serial number on the back or bottom of the turntable. SL-1200 serial numbers are in two different formats, depending on the date of manufacture. It isn't exactly possible to determine the decade in which the SL-1200 in question was manufactured, as the serial number contains only the last digit of the year. If the year digit is 8, the turntable may have been manufactured in 1978, 1988 or 1998. If the year digit is 0, the turntable may have been manufactured in 1980, 1990 or 2000. One rule of thumb is that old-format serial numbers belong to SL-1200s manufactured during the 1970s and 1980s, while new-format serial numbers belong to SL-1200s manufactured during the 1990s and beyond.
Old-format serial number: NHOJF20765 (SL-1200 manufactured 1982)
The first digit shows the year when the SL-1200 was manufactured. These serial numbers contain no indication of the month of manufacture. It should be noted that serial numbers in this format contain no letters following digits.
New-format serial number: GE4FB001154 (SL-1200 manufactured June 2004)
The first digit shows the year when the SL-1200 was manufactured, while the month of manufacture is indicated by the letter following it. Months are coded as letters between A and L inclusive; A indicates January, B indicates February, and so on.
In addition to the above, all the SL-1200MK2s from the 70's and early 80's have a 4 inch diameter plate where the RCA and ground wires enter the chassis in the rubber base of the unit. The later models have a smaller hole through which the wires enter the unit.


TWEAK A/V LAB
www.DJPROLAB.com

Posted on Apr 10, 2008

  • 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

  • 1 Answer

SOURCE: technic sl-dz1200

I had the same problem. Replacing the sensor is not gonna help. it is a focus problem. I had to fold a small piece of paper and put it under the sensor to raise it up alittle then you screw it in. The size of the paper you will have to figure out for yourself, but it will help u fix your problem

Posted on Apr 08, 2009

jeffbanko
  • 85 Answers

SOURCE: removing the platter to oil the motor shaft

PULLon it harder!!!! Its a *****! It will come up and off! Also do it evenly when you pull...there is a magnet under the platter. Dont break it! PULL evenly!

Posted on Apr 28, 2010

micmor100
  • 257 Answers

SOURCE: How do I remove the platter on a sl-bd22 Technics

You will have to lift off the cloth on the platter section to expose two rather large holes in the plattr. Insert your thumb and forefinger, and pull up.

Posted on Jul 13, 2010

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SL-1200 Turntable: I own two Technics SL-1200mk5 turntables. My probl...


Hi, could just be platter not fitted hard down on spindle. I suggest you remove the platter and place it upon a dead flat surface to check to see that the platter is flat. If it is flat refit to turntable ensuring it is hard down on the spindle. If bent discard and replace with new platter.Platters can be ordered for all model 1200/1210 from styluscity@gmail.com

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This unit has no remote or manual...was wondering if it has a random mode, and how it works? Thanks, Sean


Copy and paste this link in your internet address bar in a new tab and it will bring you to your manual.

http://the-manuals.com/technics-sl-p-770-manual/

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Change the motor disc spindle they are all the problem

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How do you install the belt in a Technics LP SL-B300


assuming that you have the correct size belt, remove the platter and place the belt onto the platter (bottom side). Replace the platter and using a pencil, grab the belt and place it around the motor hub. The slot in the platter should give you enough room to do this. Dan

Jun 07, 2009 | Technics Audio Players & Recorders

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Changing the belt on a Technics SL-3 (Linear tracking) turntable


Instructions on installation of your drive belt - this also applies to other brands as well - however this belt is only for the Technics models listed above:
  1. Remove the turntable platter off from the turntable
  2. Remove the old/damage belt
  3. Wrap the new belt underneath the turntable platter - you will see a small lip on the bottom of the platter. Wrap the belt around this lip.
  4. Put the platter back on the turntable
  5. The turntable platter will have small holes, rotate the platter until you see the motor, and the motor shaft.
  6. Pinch the belt, so that it wraps around the motor shaft
  7. Turn on and enjoy!


- OPTiC

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Mar 26, 2009 | Technics Audio Players & Recorders

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I removed the rubber pad from platter.There is two round holes in platter lift platter by grasping these
holes. wolf545

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Record player belt


Scott, the belt wraps around the bottom of the turntable platter, then put the platter back on your turntable, and you'll have to pinch back a section of the belt and wrap around the brass motor spindle. That's pretty much it!

Good luck.

- OPTiC
TWEAK A/V LAB

Apr 13, 2008 | Technics SL-1200MK2 Turntable

2 Answers

Platter stops when back scratching


i had same problem, just took mine back and exchanged for new one. however i'm having a similar problem again. i tried polish to make it more slippy, and tried cleaning under grey platter, but now i've made it worse, and i get a clicking sound when my cd's are playing. any technics dealer should be able to get it serviced for you.

Oct 17, 2007 | Technics SL-DZ1200 CD Player

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