Sl1200/Sl1210 Disassembly

turning japanese
hara78
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SL1200/SL1210 disassembly

Post by hara78 » 27 Jan 2011 20:22

As promised, here is a little writeup

This is how it looks from top, the beautiful Technics MK2 SL 1200 turntable made by Panasonic, designed in the 60/70s and still rolling. The turntable is based on modular design, so it's really simple to take apart and back - that is if you know your way around a screwdriver and can think logically ;)

You need: A philipps screwdriver (2 sizes), boxes for screws and a safe place to put the parts.

First: UNPLUG THE TURNTABLE! UNPLUG THE TURNTABLE! UNPLUG THE TURNTABLE! UNPLUG THE TURNTABLE! UNPLUG THE TURNTABLE!

I can't repeat that often enough.

I tend to put most screws back in so I don't lose them, but that's up to you.

Then we start by removing the platter. Put a finger in each of those holes and lift the platter straight up to remove it.

http://i1083.photobucket.com/albums/j39 ... i78/01.jpg

Now remove those 5 phillips screws (I had 3 only) and pull that plastic cover off.

http://i1083.photobucket.com/albums/j39 ... i78/02.jpg

Should look like this now. Welcome to the intestines of your MK2.

http://i1083.photobucket.com/albums/j39 ... i78/03.jpg

Next you need to turn your turntable upside down. Please be careful not to put it on the tonearm. Some people suggest to place it on a pillow, but I'd also not encourage you to go that way. I used some books that I placed around on the faceplate and that solves the problem.

http://i1083.photobucket.com/albums/j39 ... i78/04.jpg

Next remove all those phillips screws that hold the base in place. Please note there is a screw under each foot as well. Those foots are easily removed by just screwing them off. Keep the screws in their respective place for easier assembly.

http://i1083.photobucket.com/albums/j39 ... i78/05.jpg

Note which hole where the wires take. You can also see the screws removed in the last step still in their place. Leave them there.

http://i1083.photobucket.com/albums/j39 ... 78/07b.jpg

This is what you're looking at now. Remove the plastic cover by using your screwdriver. Again, leave the screws in place for easier assembly.

http://i1083.photobucket.com/albums/j39 ... i78/08.jpg

This is where the leads go.

http://i1083.photobucket.com/albums/j39 ... i78/09.jpg

Now we are here. I already removed the screws on the pitch on this picture, but you may do that at a later point as well. First remove the tone arm to prevent accidents.

http://i1083.photobucket.com/albums/j39 ... i78/10.jpg

To remove the tone arm, unscrew these 3 screws. Note: if you are going to paint your faceplate, you MUST make sure these three holes are covered so you don't screw up the threading. Also note the ground wire that is connected to one screw of the pitch. You will have to remove this now. Gently remove the tonearm from the faceplate.

http://i1083.photobucket.com/albums/j39 ... i78/11.jpg

Now can you safely unscrew the pitch.

http://i1083.photobucket.com/albums/j39 ... i78/12.jpg

Turn the TT around and unplug the pitch cable from the main circuit board.

http://i1083.photobucket.com/albums/j39 ... i78/13.jpg

Note this little screw holding the pitch wires in place.

http://i1083.photobucket.com/albums/j39 ... i78/14.jpg

Next remove the stylus light wire. Note that the wires are place under the circuit board, so you will have to remove that one circuit board screw. Unscrew the stylus module (no pics here, pretty self-explanatory)

http://i1083.photobucket.com/albums/j39 ... i78/15.jpg

Next, remove the power switch from the strobe module (put the long tiny screw back into the strobe module so you won't lose it).

http://i1083.photobucket.com/albums/j39 ... i78/16.jpg

Remove the ground wire and the strobe module (left on that pic) plug from the main circuit board.

http://i1083.photobucket.com/albums/j39 ... i78/18.jpg

Now remove the three black screws that hold the motor in place, remove the three golden screws that hold the main circuit board in place (put the screws back in when done so you won't lose them) and remove the two screws that hold the power circuit board in place (screws back...you get the idea).

http://i1083.photobucket.com/albums/j39 ... i78/19.jpg

Next are those five buggers (screws back into....)

http://i1083.photobucket.com/albums/j39 ... i78/20.jpg

And finally the transformer with these three screws. Best to leave them in the transformer assembly.

http://i1083.photobucket.com/albums/j39 ... i78/21.jpg

Everything lose? Check if anything is still attached. Then lift the stuff off and place it somewhere safe. Be careful so no parts run away....

http://i1083.photobucket.com/albums/j39 ... i78/22.jpg

Now turn the TT around and remove the strobe module and place the screws back.

http://i1083.photobucket.com/albums/j39 ... i78/23.jpg

And there you go! You have successfully dissembled your Technics MK2.

http://i1083.photobucket.com/albums/j39 ... i78/24.jpg

Assembly is reverse. If you want to paint your TT, make sure you remove the screws on top first. I suggest not to paint the backside.

:)

cafe latte
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Post by cafe latte » 27 Jan 2011 21:38

=D> =D> =D> =D> =D> Very well done!! This is going to be very useful for many!! Should be sticky!! Only one thing I would add is when you turn over the TT, remove the counter weight from the arm stub as the arm stub is easily broken when you are working on the arm.
Really good idea using books to suport the TT for working on!!
Very clear pics too =D> =D> =D> =D>

zumbini
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Post by zumbini » 28 Jul 2011 17:35

Excellent documentation! I wonder how much of it would apply to the MK1? I need to get to the PCB of my MK1 to troubleshoot a problem but it's not under the platter like the MK2.

I bought my MK1 in 1974 and used it daily until a few weeks ago. I believe I cracked a trace on the pitch control PCB when I removed the knobs to clean the pots. I've had to do this about every 10 years or so but this time the knobs wouldn't come off without "assistance" (a pair of channel locks and mini crowbar). I fixed the pitch problem but seem to have shorted the right channel output.

Maybe I should send it to a pro but I've had poor results with Technics service department. They had 2 shots at fixing the pitch controls but neither lasted more than a week. Anyone know of a good private repair shop?

Thanks!

cafe latte
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Post by cafe latte » 29 Jul 2011 00:23

sounds like you cracked the connection with the pot, or as you said a track on the board. I do not know much about the mk1 so I do not know how to get the board out, but cant imagine it would be that hard. The crack should be obvious when you get the board out.
Regards
CL

astroboy_45
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Post by astroboy_45 » 07 Aug 2011 12:11

This link could complement the information contained in this forum post ...

http://www.instructables.com/id/Technic ... ement-and/

Regards

fatshoolaces
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Re: Sl1200/Sl1210 Disassembly

Post by fatshoolaces » 01 Nov 2011 23:04

Also, some pretty good vids on youtube from 'Viperfrank'.
http://www.youtube.com/watch?v=CDYgjwdQ55s

TheOnlyGuz
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Re: Sl1200/Sl1210 Disassembly

Post by TheOnlyGuz » 03 Dec 2011 05:45

It was amazing. Thanks a bunch for the lesson. Just got an MK2 that needs some rebuilding and your tutorial saved me a ton of time. Kudos!

cyp21
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Re: Sl1200/Sl1210 Disassembly

Post by cyp21 » 22 Apr 2012 07:53

Yes great guide but for UK owners who have a 3 pin plug i recommend that they unsrew the plug first as i couldnt get the plug through the hole in base at bottom and this makes it much easier when wanting to get at your turntable for dissaemble.

05TypeRSX
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Re: Sl1200/Sl1210 Disassembly

Post by 05TypeRSX » 14 Jul 2012 08:10

Thank you Hara78,

This will be very useful as I get my 1210 mk2 up and running. I'm very new to the vinyl world and this is just what I was looking for. Hope to hear some Zep in the way it was intended soon.

Lord Soth
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Re: Sl1200/Sl1210 Disassembly

Post by Lord Soth » 15 Jul 2012 07:45

Dear Hara78,

BRAVO! =D> =D> =D>

Thanks for taking the time and effort to post this!

This is such a great post that it should be made into a permanent sticky.

I am thinking of changing the RCA cables on my SL1210.
Can I do that by only removing the bottom back plate (without removing the top)?
In other words, can I start the procedure from your picture (from the top) 5 onwards?

Regards,
LS

JaS
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Re: Sl1200/Sl1210 Disassembly

Post by JaS » 15 Jul 2012 10:07

Lord Soth wrote:This is such a great post that it should be made into a permanent sticky
FWIW it's already a sticky :wink:

Regards,
JaS

05TypeRSX
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Re: Sl1200/Sl1210 Disassembly

Post by 05TypeRSX » 10 Aug 2012 03:36

Lord Soth,

All you really need to do is remove the bottom main cover(the big rubbery piece) and then remove the small round tin cover at the bottom of the tone arm assembly. I just did it to my 1210, super easy dude.

Leon1210
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Re: Sl1200/Sl1210 Disassembly

Post by Leon1210 » 04 Sep 2012 14:54

Well thats an interesting set of photos - very clearly marked. but I would recomend to any one attempting to do this job, that they spend a little money on some mdf and follow my guide to making a frame that supports the whole deck when turning it up side down - I made mine about 10 years ago and has been a life saver for about the 200+ turntables I have serviced / modified for people. it is a very simple thing to make - take the sizes to your local DIY store and ask them to cut the sizes you need and then clue them together - wait 6 hours then it is device that is always handy and give your deck the max protection when you want to work on it.
the device can be seen in use in some of the photos I have placed on the technics section of this forum - my user name is leon 1210.
I hope this is some use to you all.
best regards - Leon

surv1v0r
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Re: Sl1200/Sl1210 Disassembly

Post by surv1v0r » 21 Nov 2012 00:14

Leon1210 wrote:<snip> I would recomend to anyone attempting to do this job, that they spend a little money on some MDF and follow my guide to making a frame that supports the whole deck when turning it upside down <snip>
Sounds like a very sensible idea but I'm not sure where the guide can be found. The nearest thing I can find is a series of four photos, is that it?

23281

Personally, I have glued some strips of bicycle inner tube to the lids of some empty "Bonne Maman" jam jars and I use the jars to support anything I am working on - never had a problem with this "workbench" - the inner tube stops the thing you are working on from sliding about.


ps - a great series of pictures and advice from the OP, handy to study and follow step-by-step after watching the ViperFrank YouTube video.

Leon1210
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Re: Sl1200/Sl1210 Disassembly

Post by Leon1210 » 17 Dec 2012 21:14

HI Surv1v0r
the cutting sizes for the mdf can be found in the text attached to picture 3 in the series of 4 - if you take note of the sizes and then look at the photos the assemble procedure is clear to see.
It is a very useful device - I would be very hampered if I ever lost it, it makes total disasembly and servicing very safe, like I mentioned in my post that thing has now had over 200 SL's in it for various reasons.
Regards - leon 1210

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