[multibit16]

Heres a few pics and details for a diy external psu for the Technics I knocked up, I decided to use the Paul Hynes PR3  based psu after the positive  write ups from other Techie users  and also after great results using his other regs in my dacs . According to Paul the PR3G3HD-21  for the Techie is capable of prodigious transient current delivery so won't have any problems upon start up for the platter
 
I'll add a few details how to fit it later
 
Some of the used parts, I also tried to get prices etc
 
Hammond aluminum enclosure  Maplin  N85AL  £10:79     http://www.maplin.co.uk/Module.aspx?ModuleNo=33690

DC socket , Bits of cable, heatshrink IEC socket etc can all be had  from Maplin  http://www.maplin.co.uk/Module.aspx?ModuleNo=1503

Paul Hynes  PR3G3HD-21  module £120      http://www.paulhynesdesign.com/    For those that can't or don't want to diy ,  Paul can supply a stand alone  psu called SR3-21 for £270   and  DC3C high performance DC lead for £35

I already had the 2 x  18v  80vA  transformer as a spare     http://www.farnell.com/datasheets/74766.pdf     suitable types  can be had from Farnell , RS , ebay etc,  required secondary voltage is 18v,  2 x 80vA is probably overkill


 

 
Paul Hynes PR3G3HD-21 for the Techie, I edited the pic and added a few details
 

 
Inside after the build,  theres the option to add a power on led to the PR3 module, I may add one on later
 

 
Added a few details
 

 
Finished! 
 




Brings a worthwhile improvement to this TT,  bass is tighter, high's have less sibilance, it just sounds better 

[DaveKen]

Hi Guys,
I'm new here and TBH I only joined to make this post, but having taken a quick look round I may be a regular visitor  .
I've just completed fitting a PH PR3 PSU to my Techie and wanted to express my thanks to Paul for the customer service he provided. These thanks are particularly appropriate when you consider that I was not a direct customer of Paul's, having bought an unused PR3 with transformer from an audio forum member.
Being a numptie at these things I quickly managed to 'smoke' the PR3 but Paul managed to resuscitate it for me and he provided a few pointers in the right direction when I appealed for further guidance, all above and beyond the call of duty .
I haven't got any pics of my mod'd Techie or the PR3 build but I went about both slightly differently from multibit16 above. The Techie was a major job because I replaced the tonearm and phono cables with single strands of 0.3mm silver wire ( varnished and silk coated) and beefed up the bearing a little whilst I was at it. When I put it back together I hot glued the sub-plinth to the top plate to add a bit of rigidity and lessen any potential sources of vibration (hopefully) so I'm reluctant to strip it down again to take pics, particularly given the fragility of the silver wire. I am willing to describe in words (no circuit diagrams, too technical for me) how I fed my Techie PCB with the output from the PR3 whilst retaining the on/off switch, strobe light and cueing light functions.
If anyone is interested I should be able to open up the PSU to show that. Currently a more electronically knowledgeable friend is putting together for me a little module that will take some of the 27.1v output of the transformer and clean it up a bit whilst taking it down to 24v to feed my NAD PP2 phono amp. If anyone is interested (again) it might be better to delay taking pics until this module has been installed so that everything can be seen at the same time.
Meanwhile a great vote of thanks again to Paul for his sterling customer service  -  much appreciated.
Dave.

[sondale]

I have recently bought a Technics SL120 (mk1) and an SP10EP (the type used by BBC) and I will be talking to Paul about psu's for these two - they sound good but in need of TLC. At the moment I am letting both of them run in - I doubt if the SP10 has been used for the last 10 years.

So Paul - you have been warned!!

Alan

[Paul Hynes]

SL1200/1210 internal power supply regulation upgrades.

If you decide to apply this upgrade yourself it is your responsibility to follow the instructions carefully. If you have any questions that need clarification, ask for this on this forum thread, so the information may benefit others. If you doubt your ability to apply this upgrade correctly, and safely, find a technically capable person to do it for you. I am looking into the possibility of appointing technically competent agents in key areas of the UK, and overseas to provide a fitting service for those who require it.

PHTAP3
Paul Hynes Technics SL1200/SL1210 Application Note 3 (PHTAP3).
Modification of internal power supply regulation.

Modification procedure.

TAP3.1 to TAP3.11 are photographs showing the modification procedure.

http://i700.photobucket.com/albums/ww7/paulhynes/TAP31.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP32.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP33.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP34.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP35.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP36.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP37.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP38.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP39.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP310.jpg
http://i700.photobucket.com/albums/ww7/paulhynes/TAP311.jpg

Remove the Technics mains transformer and power supply board. (TAP3.1) These are now redundant.
Remove the Motor board. (TAP3.1)
Install TDR21 dual regulator board using the transformer mounting screws. (TAP3.2)

Remove the motor board
Remove the following components from the motor board :-

Resistors
R1 – 5K6
R2 – 6K8
R3 – 2K7
R4 – 470R
R5 – 470R
R304 – 560R

Transistors
Q1 – 2SD1265
Q2 – 2SD637
Q3 – 2SD637

Capacitors
C1 – 1,000uf 50V
C2 – 33uf 25V
C5 – 0.022uf
C6 – 0.022uf

Diodes
D1 – Bridge rectifier
D3 – 5v1 Zener diode
D301 – 5V1 Zener diode

Cut pcb track to separate the motor control electronics from the motor drive electronics. (TAP3.3)

Cut pcb track to pin 9 of IC301 (AN 6682). This disconnects IC301 from the 9v4 supply generated by IC201 (AN 6680). (TAP3.5)

Drill a 1mm hole in the now isolated pad next to pin 9 of IC301. (TAP3.5)

Drill a 1mm hole in the pad between IC301 pin 5 and test point G

Drill a 1mm hole in the pad between the junction of C108, C110 and R7. This pad is also connected to pins 19 and 20 of  IC101 (AN6675) via a track on the PCB.

TDR21 terminals 1 to 6 are marked on the TDR21 PCB, Z1705, and S1709v4 pin outs are marked on the boards. TDR21 has two 21v regulators on board. The first 21v regulator nearest the 27v input side feeds the control circuitry 21v rail and the two regulators Z1705 and S1709v4. The second 21v regulator furthest away from the 27v input side feeds the motor drive circuitry.

If using Fine Silver wire or annealed copper wire with Teflon insulation it helps to cut and prepare the leads first. The modification requires 1.3 metres of wire if the external power supply lead is wired into the deck or 1.5 metres of wire if a DC inlet connector is fitted to the inlet flange. Fitting a coloured coded rubber sleeve over each end of the Teflon insulation will help with wire identification during assembly. Use red sleeves for positive and black sleeves for 0v wires.

Prepare 2 x 65mm wires for connecting the Z1705 regulator to the motor board in place of D301 zener diode as shown in (TAP3.10). Fit the wires to the motor board and solder.

Prepare 2 x 75mm wires for connecting the S1709v4 regulator to the motor board as shown in (TAP3.9). Fit the wires to the motor board and solder.

Prepare 1 x 240mm wire for 0v and 1 z 300mm wire for +21v to feed the motor drive circuitry as shown in (TAP3.7). Fit the wires to the motor board and solder.

The motor board can now be replaced in the Deck chassis and the various connectors can be refitted.

Fit 12mm stand-offs to Z1705 and S1709v4 and mount them as shown in (TAP3.10) Solder the wires from the motor board as shown in ((TAP3.10).

21v outputs from the first regulator from terminal 4 on TDR21 regulator module. Prepare 1 x 150mm wire for connection to the jumper wire (Marked J on the motor board next to C3), 1 x 140mm wire for connection to Z1705 and 1 x 190mm wire for connection to S1709v4. Solder these wires to the motor board jumper,  Z1705 and S1709v4 as shown in ((TAP3.10). Twist the three wires and fit to terminal 4 on TDR21.

21v outputs from the second regulator from terminals 5 and 6 on TDR21 regulator module. The 240mm and 300mm wires that feed the motor drive section are connected to TDR21 with the 240mm 0v wire to terminal 5 and the 300mm 21v wire to terminal 6.

Connect the external 27v power supply to TDR21 input terminals either directly from the power supply DC lead or via an input connector as shown in ((TAP3.11). The DC input 0v wire should be fitted to terminal 2 and the +27v wire to terminal 1.

Thoroughly check all wiring before refitting the platter and applying power to the external power supply.

Module prices

TDR21                  £160
Z1705                  £036
S1709v4               £036
Insured carriage and packing at cost.

[mike_p]

Hi Paul,

The folks on Art of Sound rave about your PSU's for use with the SL-1200/1210. The principal suspect appears to be SR7EHD PSU.  Can you provide a link to information on that unit, and advise whether it is still in production?

Thanks,

Mike

[mike_p]

Paul, please disregard my prior post. I found yours on the art of sound board, addressing those subjects.

Best,

Mike

[Paul Hynes]

SR7EHD-21/27 for the SL1200 customised with a Teflon circuit board, Bulk Foil resistors, Silmic II capacitors, Fine Silver lead to the XL low impedance connector.

http://i700.photobucket.com/albums/ww7/paulhynes/030512download073.jpg

http://i700.photobucket.com/albums/ww7/paulhynes/030512download076.jpg


For those asking about my power solutions for the Technics SL1200, SL1210 the following are available :-

Paul Hynes power supplies for the Technics SL1200/SL1210

Price list current 01/06/12.

All products are custom built to order.

The prices below are my prices for my standard power supply and module upgrades for the Technics SL1200/SL1210. Prices will vary with additional customisation.

SR3-21 series 2                                       £180 (only 6 of these boards left)
SR3-21 series 3                                       £270
DC3C OFC DC lead                                   £035

SR5-21/27                                             £525
DC5C OFC DC lead                                   £045

SR7EHD-21/27                                        £650 (with silver plated XLR DC connector)
SR7EHD-21/27                                        £680 (with XL low impedance DC connector)
DC7C OFC DC lead                                   £045

The SR5-21/27 and SR7EHD-21/27 allow internal output voltage adjustment from 21vdc for an external power supply upgrade to 27vdc for use with the internal regulator upgrade modules.

All DC leads terminated with silver plated 4 pin XLR at the power supply end.

DC7CXL fine silver DC lead                        £082 (with silver plated XLR typically 3 milliohm)
DC7CXL fine silver DC lead                        £112 (with XL low impedance connector > 1 milliohm)

All DC lead prices are for 1 metre lengths. Other lengths can be accommodated.

External PSU regulator module for DIY power supply assembly and internal regulator upgrades (the regulator module used in the SR7 is not available as a DIY module)

PR3iTD                                                  £100 (This external PSU upgrade module is used in the SR5)
TDR21 dual 21 volt regulator module           £160 (Internal upgrade)
S1709v4LN regulator module                     £036 (Internal upgrade)
Z1705LN regulator module                        £036 (Internal upgrade)

Insured carriage and packing is extra and will be quoted for the delivery address on request.

All of my products are custom built to order. Orders are placed in the build schedule on receipt of cleared funds. Under normal circumstances the build schedule lead-time is currently 25 to 35 working days for SR3 power supplies and the DIY modules. The SR5 and SR7 power supply lead-time is currently between 36 to 48 working days. Circumstances beyond my control can affect lead times, for example materials procurement may have variable lead times from suppliers if out of stock at time of ordering. Local grid power failure in bad weather, Holidays and staff illness can all affect lead times too.

Payment can be via PayPal by sending funds, with 3.4% added to cover the Paypal fees, to paul@paulhynesdesign.com in GBP. Please remember to include details of what you are ordering and ensure that a delivery address is also included. Alternatively payment can be by bank transfer, adding £6 for the Barclays processing fee, or in the UK over the counter at any branch of Barclays, or via the “Fast Payment” bill payment scheme that some banks now operate in the UK, with no additional fees. If this method of payment is chosen I will forward details of the bank collection account to enable payment.

My worldwide guarantee covers parts and labour for three years from receipt of goods, subject to correct application, and is transferable should you decide to re-sell at a later date. I also give a 56 day, return if not satisfied with product performance guarantee. This allows a reasonable burn in period before appraisal.

If I can be of further help let me know.

Regards
Paul