Sp10 T/T speed - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th May 2003, 05:53 PM   #1
diyAudio Member
 
Join Date: Nov 2001
Location: Malaysia
Default Sp10 T/T speed

The 33.33 rpm speed of my Technics Sp10MkII had started to drift. The local Panasonics service centre told me they do not service this model anymore. Could someone drop me a pointer where to start checking??

ckt
  Reply With Quote
Old 13th May 2003, 06:05 PM   #2
Cobra2 is offline Cobra2  Norway
DIY !
diyAudio Member
 
Cobra2's Avatar
 
Join Date: Apr 2002
Location: Stavanger, Norway
Send a message via Skype™ to Cobra2
Default Can I have it ? (cheap)?

Hav a look here:
http://de.geocities.com/bc1a69/index_eng.html
or here:
http://www.xs4all.nl/~rabruil/sp10page.html

Arne k
__________________
Don't believe everything you think...
  Reply With Quote
Old 13th May 2003, 09:23 PM   #3
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
Join Date: Jan 2003
Location: Near London. UK
Are you certain it's really drifting? When the neon fails, you might view the strobe from mains lighting, which gives a slightly incorrect answer.

If it really is running at the wrong speed, the standard fault is that the reservoir capacitor in the power supply for the 5V logic supply needs replacing. I can't remember the value, but it's the lowish voltage high value capacitor in the power supply box.
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote
Old 14th May 2003, 02:17 AM   #4
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
The complete service manual for the SP10 is available from www.vinylengine.com . You need to register to be allowed into the members area to access it. It just under 5M of pdf.

Otherwise I agree with EC for most likely faults. All of mine are and have been rock solid except for one which has started to play up a bit. It sort of goes, but sounds like the motor phases are out of sync and are fighting each other, so it stops unless the power button is held on. Gross faults like this are usually easy to find. With two spares, it's in the to-do-later pile.

Make sure the bearing is lubed regularly too. The SL1200 oil is fine and available from Technics or www.kabusa.com
  Reply With Quote
Old 14th May 2003, 03:59 AM   #5
diyAudio Member
 
Join Date: Nov 2001
Location: Malaysia
Default Sp10 speed

Thanks EC. I'll check that out and let you know the results.

ckt
  Reply With Quote
Old 20th May 2003, 06:31 AM   #6
BrianL is offline BrianL  United States
diyAudio Member
 
Join Date: Mar 2002
Location: USA
Default The Vinyl Engine??

What happened to www.vinylengine.com ? Every time
I go to it I get a "closed" message on the home page.
Just when I was wanting to download the SP10 mk II
service manual...

Does anyone have a copy that they previously downloaded
that they could send me?
__________________
bel
  Reply With Quote
Old 20th May 2003, 06:52 AM   #7
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
Default Re: The Vinyl Engine??

Quote:
Originally posted by BrianL
What happened to www.vinylengine.com ? Every time
I go to it I get a "closed" message on the home page.
Just when I was wanting to download the SP10 mk II
service manual...

Does anyone have a copy that they previously downloaded
that they could send me?
I've had a number of weird experiences trying to get onto VE.

I have a copy of the manual from them which I'll send tonight if you ping me with your email addy.

Cheers
  Reply With Quote
Old 20th May 2003, 06:11 PM   #8
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
Default I Have An SP-10 too, And So Does My Wife...

Can I have a copy too ?.

Ta mate,
Eric.
__________________
I believe not to believe in any fixed belief system.
  Reply With Quote
Old 20th May 2003, 06:58 PM   #9
diyAudio Member
 
Join Date: Nov 2001
Location: Malaysia
Default T/T speed

Hi Ec,

Still no luck yet after checking the caps. I suspect the problem may be in the logic card because all the voltages in the drive and control card seem to jive with the service manual. My problem is only the 33 rpm is out while the rest are spot on! All the ICs in the logic card are Technics house numbers. Would you by chance know where I can check cross reference to commercial part numbers? The guys at Panasonic are not helpful!!
BTW, I don't have any problem with vinyl engine but the file size of the SP10 manual is a killer! - 25 pages!!
  Reply With Quote
Old 20th May 2003, 07:06 PM   #10
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
 
EC8010's Avatar
 
Join Date: Jan 2003
Location: Near London. UK
This may sound daft, but what makes you think the speed is wrong on 33?

I would check the supply rails with an oscilloscope for spikes very carefully before diving into the logic circuitry. It's no joke attempting to faultfind the under-platter electronics, and you can't remove the platter to lighten it and make it less liable to collapse on you because the motor objects and cogs wildly. I'm afraid that's all I can remember - it's 15 years since I last had to go inside an SP10. As I recall, the divider etc is all fairly standard stuff, it's the motor drive amplifiers that are hairy.
__________________
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sansui Sp10 emmanuel R Full Range 5 3rd January 2012 02:46 AM
Technics SP10 haydn Analogue Source 10 27th October 2011 03:18 PM
Hi-Vi SP10 woofer blue934 Multi-Way 0 6th May 2007 05:09 PM
Replace SP10 bearing? Shaun Analogue Source 3 28th May 2003 01:24 PM
TEchnics SP10 MK II Turntable diyman Analogue Source 15 17th December 2001 03:28 PM


New To Site? Need Help?

All times are GMT. The time now is 05:01 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2