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Old 28th February 2007, 01:51 AM   #41
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Default About the SL-1300

Quote:
Originally posted by ashok
Is the SL1300 a good machine ? A friend has one and never uses it. Might manage to exchange it for some other equipment. Worth it ?
The SL-1300 (MK1, there is also a rather different MK2 version) is a fine player with sweet looks. I've got the SL-1310 at home which is the black (European) version of the SL-1300. It's more or less the fully automatic version of the SL-1200 (not the MK2).

The specs of platterweight, wow & flutter and rumble are the same.
The motor is a bit different: it's more like the 12 pole motors on the other SL-tables than the 20 pole motor of the original SL-1200. I think it's got a bit less start-up torque than the SL-1200MK2 and obviously isn't quartz controlled.
The weight is much like the SL-1200, almost 10 kg due to the massive alu diecast top-base.
It lacks the fancy big feet of the SL-1200.
The arm is also different. Better in my opinion because there is more effective length. Like the one on the SL-1200 though, it's on the heavy side (17g w/o. cart), so you need a low compliant cartridge (about 10cu dynamic compliance at 10Hz) to go with it.

Apart from the quartz locked motorspeed and the lighter arm, the main improvement made in the newer SL-1200MK2 and it's home variants is the platter damping using rubber below the platter and a thicker mat. I think this would be the best tweak for this player.

Here you can find a nice brochure on it:

http://www.vinylengine.com/library_m..._model=SL-1300

I've got the SL-1310, SL-1300MK2 and SL-1600MK2 models here so I'll be happy to inform you about anything.
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Old 28th February 2007, 02:55 AM   #42
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dutchflea -- Thanks for the SL1300 update. I will get to inspect the 1300 next week . Will report on it after that . Till then let me spruce up some equipment for exchange !
Cheers.
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Old 28th February 2007, 05:15 AM   #43
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I think I have a problem. My machine is a SL1200 with an EPA120 tone arm . A picture is attached.
The service manuals of the SL1200 that most of you have, shows the area under the platter as removeable and exposing the circuit board etc. In my unit the area under the platter is part of the moulding and not removeable . None of the service manuals I have come across so far have shown this model.
Is there a service manual that shows this model ?

So do I have to open up the bottom cover to access all the boards ? A bit inconvenient to do that I guess.
There are a few screws on the chassis around the motor . Wonder what that holds. I don't want to remove anything without knowing what it does.

I forgot to mention that the platter mat is a thick black material and possibly rubber ! It's very hard right now . Is that the way it is or has the rubber ' dried up ' ?
What oil can I use for the motor? The manual mentions oiling the motor. The original vial of oil is missing.

Thanks.
Ashok.
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File Type: jpg sl1200-epa120.jpg (34.1 KB, 300 views)
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Old 28th February 2007, 05:44 AM   #44
dgb is offline dgb  New Zealand
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You have a SL1200 MK 1 Turntable. Quite a bit different from the MK 2 version, both on cosmetics and electronics.
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Old 28th February 2007, 09:40 AM   #45
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I opened up the bottom. Looks a bit like it's from the stone age !
Well the good thing is that it probably is easier to fix !

I cleaned all pots and connectors and put them back to the original position. I haven't yet looked at the various signals. I would have liked to see a block diagram . Must go over all the other service manuals to see if any info is useful.
Cheers.
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Old 28th February 2007, 09:42 AM   #46
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Here is the parts side.
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Old 28th February 2007, 12:39 PM   #47
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I think I found the manual.
The SL1100 manual has the same electronics as the SL1200 with EPA120 arm.
So for all those with the SL120 and the old SL1200 can use the SL1100 manual from www.vinylengine.com

Cheers.
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Old 28th February 2007, 06:17 PM   #48
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Hi,

I think the SL-1100 (SL-110 without arm) and SL-1200 (SL-120 without arm) motor are much alike. Stone age indeed. But pretty solid.

The instruction manual can be found here:

http://www.vinylengine.com/library_m...d_model=SL-120

For the service manual you can indeed have a look at the SL-1100 or SL-110.

The oil you can use to lubricate the spindle is the same as for the other Technics Direct Drive models (SP-10, SL-1200MK2, etc etc): SFW0010. If you want to go cheap standard 15W40 motor oil is an option. Here is a pic of the original oil:

http://img74.imageshack.us/img74/2888/dsc01279st2.jpg

The mat is not the original one. It's an SL-1200MK2 mat. That's a thick, hard mat indeed. I don't think it's bad though. The original mat is the same as came with the SL-1300 (MK1). Its thin, soft and has a lot of concentric ridgjes that collect dust. See these pics:

http://www.vinylengine.com/phpBB2/al...hp?pic_id=1881
http://web.archive.org/web/200605021...200catalog.jpg


Here are a few pics of my SL-1310. You can see they are related. Both released in 1975. But inside it's much more crowded ince it is automatic. I see the flash of the cam reveals the dust on the cover in a very exaggerated way!

http://img126.imageshack.us/img126/6889/sl13102zv1.jpg

http://img180.imageshack.us/img180/130/sl13108fo7.jpg

http://img403.imageshack.us/img403/9685/sl13105ul6.jpg

http://img253.imageshack.us/img253/5568/sl13106np9.jpg
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Old 2nd March 2007, 03:00 AM   #49
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Hi Guys,
I discovered that the power supply rail ( with positive ground !) seems to have 1 volt pulses on it spaced about 3 to 4 seconds apart . This is related to the speed fluctuation . It's not a constant speed error. The speed varies around the correct value.

Strangely if I apply pressure on the turntable to slow it down with friction and then slowly release the friction , the platter comes up to speed and stays correct and the power supply rail stops having those pulses. The album then plays normally. However if I stop and start again the problem appears again till I do the 'friction operation again '.

Any ideas what could be wrong ? I changed most of the electrolytic caps including the power supply cap ( up from 470uF to 2200uF ).

A scope shot is attached.
Thanks.
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File Type: jpg sl1200-supply.jpg (25.5 KB, 243 views)
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Old 2nd March 2007, 11:27 AM   #50
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Default A quick update.

I replaced all film and electrolytic capacitors and three transistors that showed wrong ( low ) signal levels. Transistors were BC equivalents of the 2SA types and some elcos were larger than the original.
Now the machine works perfectly ! Thanks for all the suggestions that some of you made.

Cheers,
Ashok.
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