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Sansui 1000x restoration - Suzuki cap replacement

Discussion in 'Exclusively Sansui' started by toneriderMUC, Sep 9, 2018.

  1. toneriderMUC

    toneriderMUC Active Member

    Messages:
    103
    Location:
    Munich, Germany
    My newly acquired 1000x needs a recap and restoration. I am currently making a parts list for mouser. I will also replace all 2SC458LG transistors, but I was very surprised to find SUZUKI (oil?) caps in the 1000x. I always thought their use was restricted to tube equipment back then.

    on power block(!):
    0.0047uf / 600V oil

    other positions in between boards:
    0,033 / 600V oil
    0,0047 / 600V oil
    0,068 / 400V oil

    I now wonder what might be a suitable replacement. They can be found in a couple of places and I am not sure, if I can just replace them with any decent audio polypropylene...

    Has anyone experiences with these?
     

     

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  2. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    You wouldn't want a Polypropylene there (C058) - you need an X-Y rated film capacitor of at least 275VAC rating, and the same with C057.

    Two more in the PSU have voltage ratings, so you'll need to observe those. I couldn't see too many other positions where Oil capacitors might have been used - but then I am only looking at the schematic. ;)
     
    Last edited: Sep 9, 2018
  3. toneriderMUC

    toneriderMUC Active Member

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    I found Illinois MPW series ( Mouser 472MPW400K ). Datasheet outlines them to use in power amp applications - should they do the job?
     
  4. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    Last edited: Sep 9, 2018
  5. toneriderMUC

    toneriderMUC Active Member

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    Location:
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  6. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    Tell me the circuit references like 'Cxxx' and I will advise - as you can appreciate I can't see which ones are currently Suzuki oils. :)
     
    Last edited: Sep 9, 2018

     

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  7. toneriderMUC

    toneriderMUC Active Member

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    John, you are the best!!! :)

    Its those:
    C057,
    C058,
    C059,
    C060,
    C061,
    C062,

    Service Manual page 29, 30. Page 30 has photographs with their position.

    C001 is the the 0,0047 / 600V oil cap in power position mentioned before. Its on board F1251.
     
    Last edited: Sep 9, 2018
  8. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    C057, https://www.mouser.co.uk/ProductDetail/Cornell-Dubilier-CDE/158X333?qs=0r35cIPu56EgjTKc75ZGMg==
    C058, https://www.mouser.co.uk/ProductDetail/Cornell-Dubilier-CDE/DPPM20D47K-F?qs=sGAEpiMZZMv1cc3ydrPrF7KrP8luoaaUlei1V1rcn9w=
    C059, https://www.mouser.co.uk/ProductDetail/WIMA/MKP4F026803C00JSSD?qs=sGAEpiMZZMv1cc3ydrPrFwgzP98AO9idgumyry699Tg=
    C060, https://www.mouser.co.uk/ProductDetail/WIMA/MKP4F026803C00JSSD?qs=sGAEpiMZZMv1cc3ydrPrFwgzP98AO9idgumyry699Tg=
    C061, can see on picture - but not on schematic.
    C062, can see on picture - but not on schematic.

    C061 & C062
    Please can you tell me the value and voltage of these - and if you can advise where they are connected to, like - Board number // Pin number // connected to:-'other component reference' - anything that helps me know what they are connected to and thus what there purpose is. :)
     
    Last edited: Sep 16, 2018
  9. toneriderMUC

    toneriderMUC Active Member

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    103
    Location:
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    This is how they look like in my schematic, its another two 0,0047/600:

    upload_2018-9-9_17-15-5.png

    They connect parts of the voltage selecter on the back of the amplifier. The selector consists of two seperate plugs and C061 and C062 seem to connect plug 1 and plug 2.
    My unit interestingly only has one of them! I wonder if the second one has been removed in the past.


    C001 is another 0,0047 / 600V oil cap in power position mentioned before. Its on board F1251.
     
  10. Hyperion

    Hyperion Roobarb & Custard Subscriber

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  11. Hyperion

    Hyperion Roobarb & Custard Subscriber

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  12. toneriderMUC

    toneriderMUC Active Member

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  13. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    You are welcome. ;)
     
  14. toneriderMUC

    toneriderMUC Active Member

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    John, I am currently trying to collect the parts you selected for these positions. One postion is not clear:

    C058 needs to be 0,0047/600. The part/series you selected is unfortunately not produced in 0,0047uf value and does not seem to support the voltage.
    It would be really cool if you could have a quick look at that.. :bowdown:
     
  15. Hyperion

    Hyperion Roobarb & Custard Subscriber

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    It does actually, the capacitor I selected is 'AC Rated' at 275V, - meaning that it is good for at least 3 times that rating (maybe even 4-5 times) for applied DC voltages. ;)
     
  16. toneriderMUC

    toneriderMUC Active Member

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    Oh!

    But still, that series is not available at 0,0047uf, so I cant take those :-(
     

     

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  17. Hyperion

    Hyperion Roobarb & Custard Subscriber

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  18. toneriderMUC

    toneriderMUC Active Member

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