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Thread: Croft micro playing up

  1. #1
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 1,888
    I'm Mike.

    Default Croft micro playing up

    Just plugged the Croft micro back in after using a JVC ax z 1010 for a few months, and its not working, sound is distorted, using it with a 909, replaced the croft pre with a cheapy passive and that works, so fault is defo in the Croft.
    Current system - Garrard 401/Mayware F4 in progress! 1210 GR/Jelco 750/Nagaoka MP 200/Graham Slee Era V. CDP - Mission PCM 7000. Amp - Audio Innovations S500. Audio Note J's / QED XT40 speaker cable/Straight wire interconnects.

  2. #2
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

    Posts: 6,545
    I'm Dave.

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    Check the fuse, if not it's a valve.

  3. #3
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 4,370
    I'm Lawrence.

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    Quote Originally Posted by hifi_dave View Post
    Check the fuse, if not it's a valve.
    Agree about the valve, not sure how a blown fuse would make it distort though?

  4. #4
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

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    I'm Dave.

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    I believe there is one for + and one for -.

  5. #5
    Join Date: Mar 2016

    Location: Brighton, UK.

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    I'm Mike.

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    Quote Originally Posted by hifi_dave View Post
    I believe there is one for + and one for -.
    Thanks Dave, which fuse do I check? And how can I tell which valve is playing up?
    Current system - Garrard 401/Mayware F4 in progress! 1210 GR/Jelco 750/Nagaoka MP 200/Graham Slee Era V. CDP - Mission PCM 7000. Amp - Audio Innovations S500. Audio Note J's / QED XT40 speaker cable/Straight wire interconnects.

  6. #6
    Join Date: Feb 2012

    Location: Estonia

    Posts: 130
    I'm ahto.

    Default

    it's mostly been the fuses in my experience. a blown fuse means heavy distortion.

    they're at the back.

    QUOTE=Mikeandvan;1153389]Thanks Dave, which fuse do I check? And how can I tell which valve is playing up?[/QUOTE]
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  7. #7
    Join Date: Jun 2015

    Location: London/Durham

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    I'm Lawrence.

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    Quote Originally Posted by hifi_dave View Post
    I believe there is one for + and one for -.
    Oh right makes sense now, I assumed it was just on the mains power.

  8. #8
    Join Date: May 2012

    Location: Dagenham Essex

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    I'm Allen.

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    Depending on age send it off to Glen for a dose of looking at
    Please note , I cant spell , now you all know

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  9. #9
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 1,888
    I'm Mike.

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    Tried again and was working, then nothing, was using a Graham slee phone stage through line 1, changed to line 2 all fine. So what's up with line 1?
    Current system - Garrard 401/Mayware F4 in progress! 1210 GR/Jelco 750/Nagaoka MP 200/Graham Slee Era V. CDP - Mission PCM 7000. Amp - Audio Innovations S500. Audio Note J's / QED XT40 speaker cable/Straight wire interconnects.

  10. #10
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 4,370
    I'm Lawrence.

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    Quote Originally Posted by Mikeandvan View Post
    Tried again and was working, then nothing, was using a Graham slee phone stage through line 1, changed to line 2 all fine. So what's up with line 1?
    Is one pair a phono level input? Send some pics of the inside, from my experience line level micros have a single valve and phono level ones have 3 valves. That excludes regulator valves in the earlier (or perhaps some higher end later) models.

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