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The Incredible Technics SP-10 Thread
The Incredible Technics SP-10 Thread
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Old 29th August 2018, 11:31 AM   #1111
JP is online now JP  United States
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This is the drive waveform from a healthy 'table.
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Old 29th August 2018, 12:24 PM   #1112
Dennis Hui is online now Dennis Hui  Canada
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The Incredible Technics SP-10 Thread
Default Armboard material

Newbie question here. A few months ago I got an obsidian plinth
for a sp10 Mk2, without an armboard. The original armboard with the
metal mounting bracket seems difficult/expensive to acquire.

I'm wondering if a suitably sized piece of wood would be something to
try.

What material would you suggest?

Thanks,
Dennis
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Old 29th August 2018, 12:37 PM   #1113
JP is online now JP  United States
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These guys have an all-wood replacement: Acoustand Complete Armboard For Technics SP10 Original Obsidian Plinth - Acoustand Audio

I may have a corroded frame. If you want it I'll check.
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Old 30th August 2018, 10:36 AM   #1114
Dennis Hui is online now Dennis Hui  Canada
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The Incredible Technics SP-10 Thread
Thanks for the info JP!
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Old 31st August 2018, 05:52 AM   #1115
Neilsan is offline Neilsan  New Zealand
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I've used a piece of bench bamboo for my spare arm board.Same thickness as the other 2 originals I have.
Removed one of the originals and copied it.
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Old 31st August 2018, 06:07 AM   #1116
ra7 is offline ra7  United States
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The Incredible Technics SP-10 Thread
Quote:
Originally Posted by JP View Post
This is the drive waveform from a healthy 'table.
Quote:
Originally Posted by Dave Cawley View Post
Were all 3 the same ? Is the PSU now OK ? and under load ?

Dave
All 3 were the same. JP's waveforms give me hope. Mine weren't too dissimilar, but I need to readjust the scope. Although, it is not starting anymore after the short. PS voltages appear to be OK.

My days are getting pretty busy, so I am not sure when I can pick this back up.


Does anybody repair these things in the US? I am in the bay area, CA.
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Old 31st August 2018, 07:39 AM   #1117
Dave Cawley is offline Dave Cawley  United Kingdom
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Hi ra7

That's sort of good news on the waveforms. The "short" issue should be easy to find. I know of only two people who repair these and I'm one ! I don't touch anything that has been looked at before and in any case both of us are expensive.

Hopefully there are others and they will respond to you request here ?

Regards

Dave
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Old 31st August 2018, 08:39 PM   #1118
Aleks1 is offline Aleks1  United Kingdom
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Default Plinth for the 10

I received a custom made plinth for the Sp-10 today, it makes the same sound as rapping ones knuckles on the armoured hull of a tank. Solid as.

Time to mount the SME V and have a listen.
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Old 3rd September 2018, 07:56 AM   #1119
ra7 is offline ra7  United States
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The Incredible Technics SP-10 Thread
Dave, JP, others,

I am now getting 4.8 something volts on the 5V line. Walking through the PS, all the voltages check out except for TR404, which is the transistor mounted to the sink. There is a replacement available, but I'm thinking of nixing these old boards and building a new PS. Thinking of going with Pete's board and shoving it into the existing PS chassis. I really would like to keep the same chassis, and even reuse the same transformer. I'll see if there is enough space tomorrow.
Low Voltage Regulator

Aleks, super cool plinth. I like the aesthetics! If I ever get to the plinth, I would like to make something similar, and I would make the top of the SP-10 flush with the rest of the plinth, so that only the platter sticks out.
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Old 3rd September 2018, 08:42 AM   #1120
Dave Cawley is offline Dave Cawley  United Kingdom
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Hi ra7, I would repair the existing regulator. What is the 5v line with the PSU not connected to the turntable ? And also the base of TR401 and the top of D407
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