Author Topic: Technics SL-1300 Help needed, please  (Read 823 times)

Offline Gareth80

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Technics SL-1300 Help needed, please
« on: December 17, 2017, 05:53:36 PM »
Hi all.

Found a mint Technics SL-1300.
Everything works perfectly, however,

I noticed that the tonearm weight doesn't stay in place and moves around. I have a feeling that there is something missing on the tonearm that keeps the weight in place. Everything looks original so I am confident everything is original.

Tried to put insulation tape on the tonearm but not ideal and doesn't really work.

Any help, assistance, guidance would be much appreciated.

Pic below of the actual TT (weight is wrong way around in the Pic)

Many thanks



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Offline Gareth80

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Re: Technics SL-1300 Help needed, please
« Reply #1 on: December 18, 2017, 11:20:49 AM »
Playing around with the tonearm now and there is a cavity at the bottom.

This little piece just fell out.

I don't think it would hold by gluing it in place.

Has anyone had this issue before and if so are there other fixes to ensure the weight doesn't move around and I can still setup the tonearm?

Trying to find detailed views of how this little piece fits but no luck yet

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Offline vleisman

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Re: Technics SL-1300 Help needed, please
« Reply #2 on: December 18, 2017, 01:19:09 PM »
Can you be more descriptive, how does the weight move around? Slide backwards/forwards on its own? Why the insulation tape, is the hole in the weight bigger than the arm? Sounds like the weight isn't correct for the arm.

Offline fredeb

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Re: Technics SL-1300 Help needed, please
« Reply #3 on: December 18, 2017, 02:42:27 PM »
Here's another pic of a SL-1300 . Does the shaft look similar when you remove the weight ?

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Offline Gareth80

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Re: Technics SL-1300 Help needed, please
« Reply #4 on: December 18, 2017, 03:08:40 PM »
That picture looks identical to the one i have.

On the bottom of the tonearm there is a part that has a protrusion (Broken off part as shown in the last pic) that by the looks of it, guides the weight along. The protrusion is what grips into the spiral inside the  barrel of the weight.


Offline Gareth80

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Re: Technics SL-1300 Help needed, please
« Reply #5 on: December 18, 2017, 03:10:38 PM »
That picture looks identical to the one i have.

On the bottom of the tonearm there is a part that has a protrusion (Broken off part as shown in the last pic) that by the looks of it, guides the weight along. The protrusion is what grips into the spiral inside the  barrel of the weight.
Some more pics

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Offline Shonver

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Re: Technics SL-1300 Help needed, please
« Reply #6 on: December 18, 2017, 03:20:58 PM »
I think in the first pic your weight was on back to front. The numbered scale must face the front.
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Offline Gareth80

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Re: Technics SL-1300 Help needed, please
« Reply #7 on: December 18, 2017, 03:29:26 PM »
I think in the first pic your weight was on back to front. The numbered scale must face the front.
Thanks. I did note that in the post

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Offline fredeb

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Re: Technics SL-1300 Help needed, please
« Reply #8 on: December 18, 2017, 03:31:44 PM »
If you can figure out where the broken bit should be attached it should be fine to glue it . Just give it enough time to set properly .
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Offline Shonver

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Re: Technics SL-1300 Help needed, please
« Reply #9 on: December 18, 2017, 03:34:59 PM »
Have a look on the underside of the stub. There is a thread inside the weight (visible in your pic); the arm should have something that rides inside it.
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Offline Gareth80

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Re: Technics SL-1300 Help needed, please
« Reply #10 on: December 18, 2017, 03:42:06 PM »
So it looks like the little stub or piece that broke off is what the barrel grooves use to turn on. So that little piece is the only think that keeps the barrel on.

Problem now is it looks like i will need to take the tonearm off to be able to glue the piece back on. Never touched a tonearm before and im thinking it is probably not a good idea.

There are two open grooves on the bottom of the arm and i cant feel where there is a rough or uneven surface indicating where i would need to glue it back on.

Cant find anything online about how it is fitted and there are no references to that little part in any of the service manuals.

If anyone has a SL-1300 and could take a pic of the bottom of their tonearm to give me an idea of the placement that would be ideal.


Offline Aqualung

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Re: Technics SL-1300 Help needed, please
« Reply #11 on: December 18, 2017, 03:53:46 PM »
Yes, your problem is the broken off bit.
It is (was) attached to the bottom of the arm stub, with the pimple pointing away
(i.e. riding in the counter weight's groove).
It can be pushed flat against the stub, (to put the counter weight on)
but is "spring-loaded" so that it naturally pushes away, and creates a firm fit inside the groove.
You probably don't have to remove the arm - the stub should unscrew:
look into the back - there should be a screw (usually philips head) that screws into a captive nut on the other side, and pulls the stub tight up against the top of the arm bearing housing.

I might be wrong, but try that.

Johan


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Offline Gareth80

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Re: Technics SL-1300 Help needed, please
« Reply #12 on: December 18, 2017, 04:09:12 PM »
Thanks Johan. Will look into that now. Much appreciated

Offline fredeb

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Re: Technics SL-1300 Help needed, please
« Reply #13 on: December 18, 2017, 04:34:52 PM »
I have a SL-1400 , arms look identical , but it appears they did upgrade the bit that broke in your case .



I suppose you could :

a) Remove the arm and then glue it in place

b) Find a piece of pipe that will fit over the exposed end of end-stub ( metal bit ) and fashion your own replacement part .

c) Wind a sufficient amount of plumbers tape around the exposed end so that the counterweight remains firmly in place .
...evolution is the gradual development and stratification of progressive series of wholes, stretching from the inorganic beginnings to the highest level of spiritual creation.
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Offline Agaton Sax

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Re: Technics SL-1300 Help needed, please
« Reply #14 on: December 18, 2017, 04:44:54 PM »
This from a lower end Technics but it should be similar?