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Green protection light

Discussion in 'Exclusively Sansui' started by MrChevelle, Apr 21, 2018.

  1. MrChevelle

    MrChevelle New Member

    Messages:
    7
    i have a Sansui 9090, the red protection light flashes and goes out after the protection relay clicks. Everything works excellent but the green light never comes on. I didn’t see this issue in the numerous protection light problems. it possible that the led on board F2695 has failed or is there another common issue?
     

     

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  2. Tom B

    Tom B AK Subscriber Subscriber

    Messages:
    1,443
    Location:
    Bay Ridge, Brooklyn New York
    The contact in the protect relay could be dirty. The one of the Normally closed contacts gives the flashing red. When the relay closes, the Normally open contact should engage giving the green LED. Try tapping on the protect relay with a wooden stick or something like a chopstick or other non metalic item, but be aware that the left or right channel could cut out as well as you tap, because if one of the contacts is dirty, they probably are all dirty. Use a set of headphones to listen at low volume when you do this, to see if the left or right is affected.
     
    tnsilver likes this.
  3. Blue Shadow

    Blue Shadow I gotta get me a new title

    Messages:
    21,025
    Location:
    SE PA
    There is a resistor in the circuit for one of the two LEDs. I think it is the green light. It fails, just replace it. 1500Ω or something like that.
     
    Hyperion and Overundr1 like this.
  4. LBPete

    LBPete Rolling Along Subscriber

    Messages:
    11,484
    Location:
    Long Beach, CA
    Yup, that dropping resistor has probably failed. It's a fairly common issue. There are a number of existing threads on that topic.

    - Pete
     
  5. MrChevelle

    MrChevelle New Member

    Messages:
    7
     
  6. MrChevelle

    MrChevelle New Member

    Messages:
    7
    Thanks everyone for the feedback. It’s next weekends project so I’ll let you know after I try the fix.
     

     

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  7. MrChevelle

    MrChevelle New Member

    Messages:
    7
    Just wanted to thank you for the diagnosis on my green protection light issue. I replaced the resistor and all is well now.
     
    Hyperion and Hipocrates like this.
  8. Blue Shadow

    Blue Shadow I gotta get me a new title

    Messages:
    21,025
    Location:
    SE PA
    April 22

    June 11

    That is about how long it takes for the upcoming weekend project to actually happen.

    Glad you got the led working again.
     
    slowpat and slimecity like this.

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