Linn "LINTO" MC Preamp Schematic without SMPS - Schematic for SMPS wanted - Page 4 - diyAudio
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Old 21st October 2012, 07:01 PM   #31
tvi is offline tvi  Australia
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Can't help with schematic but this might be of interest.

WO9965135 NOISE SUPPRESSION SYSTEM FOR A POWER SUPPLY. LINN PROD LTD
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Last edited by tvi; 21st October 2012 at 07:05 PM.
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Old 8th February 2014, 01:35 PM   #32
kkwan18 is offline kkwan18  Wales
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Is it possible by replacing the switchmode power supple with a transformer?
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Old 8th February 2014, 03:31 PM   #33
niamex is offline niamex  Bulgaria
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Quote:
Originally Posted by kkwan18 View Post
Is it possible by replacing the switchmode power supple with a transformer?
Definitively it is a right step ahead IMHO. Will post here the whole story of my mod I am very cslose to finalize-long story At the moment it is singing like a bird.
Cheers
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Old 8th February 2014, 05:30 PM   #34
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Quote:
Originally Posted by kkwan18 View Post
Is it possible by replacing the switchmode power supple with a transformer?
No. You need additional a rectifier bridge or four pieces of high speed diodes, capacitors and voltage regulator, both for positive and negative voltage rail. Instead a serial regulator I would prefer a parallel regulator. And instead one supply for both channels I would prefer two monaural power supplies to optimize the GND management.

Quote:
Originally Posted by tiefbassuebertr View Post
schematic for "LINTO" SMPS still needed
no one here who has now opened this module and drawn the schematic diagram?

Last edited by tiefbassuebertr; 8th February 2014 at 05:34 PM.
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Old 8th February 2014, 05:53 PM   #35
niamex is offline niamex  Bulgaria
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Quote:
Originally Posted by tiefbassuebertr View Post
No. You need additional a rectifier bridge or four pieces of high speed diodes, capacitors and voltage regulator, both for positive and negative voltage rail. Instead a serial regulator I would prefer a parallel regulator. And instead one supply for both channels I would prefer two monaural power supplies to optimize the GND management.



no one here who has now opened this module and drawn the schematic diagram?
Fully agree but I have just replaced the diodes with hyper fast ones paralleled with 0.1 uF and simply delivered the required voltage by an R-core trafo - works fine so far.
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Old 20th February 2014, 02:28 PM   #36
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Hi,
Thanks for all the info posted here. Our unit was tripping power light then dead. fault caused in our case by C19 on the AVS PWB.

Thanks
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Old 28th May 2014, 07:21 AM   #37
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hi Niamex,

my Kairn SMP is also broken, could you please tell me the transformer each pin output voltage? so I can find a fitted a normal toroidal transformer. thanks.
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Old 29th May 2014, 11:52 AM   #38
andyr is offline andyr  Australia
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Quote:
Originally Posted by tiefbassuebertr View Post

I need the schematic diagram from the switch mode power supply. Who can help?
From the experiment I have just done, you should build an analogue (regulated) PS which supplies the same DC voltage as the Linto SMPS does ... it will sound better!

(A SMPS is used for cost & size reasons - not SQ!)


Regards,

Andy

Last edited by andyr; 29th May 2014 at 11:55 AM.
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Old 31st May 2014, 07:52 AM   #39
niamex is offline niamex  Bulgaria
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Originally Posted by willis202 View Post
hi Niamex,

my Kairn SMP is also broken, could you please tell me the transformer each pin output voltage? so I can find a fitted a normal toroidal transformer. thanks.
Sorry I am late, it was long time ago and I do not remember exactly the voltages but you can see the photos and judge what to do - definitely new hyper fast soft recovering diodes /Fairchild/ and an R-core trafo.

Regards,
Ignat
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File Type: jpg KAIRN2.JPG (578.6 KB, 47 views)
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Old 4th June 2014, 01:12 AM   #40
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Thanks for the useful help, but you how to fix the trafo, I saw you just put it above the PCB, It will not cause a short-ciruit? Thanks again.
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