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Id circuit board part

Discussion in 'Repairing Electronics' started by James Lundmark, Jul 27, 2017.

  1. James Lundmark

    James Lundmark New Member

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    Trying to id a part on a controller board for an irrigation system. The part is cylindrical, silver, no markings, 5.8 mm x 1.7 mm. Might be a crystal or oscillator. Board has marking Y2 on it. Any ideas, cannot find a diagram. Thanks, photo attached
     

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  2. Pommie

    Pommie Well-Known Member Most Helpful Member

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    Try adding a photo of where it came from. The board might give us a better clue as to what it is.

    Mike.
     
  3. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    It looks most like a crystal, probably a 32KHz clock crystal.
     
  4. dave

    Dave New Member

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  5. James Lundmark

    James Lundmark New Member

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    Tried to add Picture of board, located at Y2, message file too large, how do i attach, thanks
     
  6. James Lundmark

    James Lundmark New Member

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    Why can't i read responses, covered by member info
     
  7. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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  8. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    You probably have a very large picture. Try editing (crop) the file to make it smaller. Most editors also have a way to reduce the file size.
     
  9. DerStrom8

    DerStrom8 Super Moderator Most Helpful Member

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    'Y' is often used as a PCB designator for a crystal, so I am agreeing with Nigel on this one.
     
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  10. James Lundmark

    James Lundmark New Member

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    Board image Y2
     

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  11. DerStrom8

    DerStrom8 Super Moderator Most Helpful Member

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    What's on the other side of the board? Do you see an IC connected directly to the pins of Y2?
     
  12. James Lundmark

    James Lundmark New Member

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    This is backside of board, terminals circled in red
     

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  13. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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    Yep, crystal. the next step is what are all of the numbers on the big chip?

    One corner of the chip should be "different" than the other 3. That's pin 1. Start counting CCW and what pins are Y1 connected to?
     
  14. DerStrom8

    DerStrom8 Super Moderator Most Helpful Member

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    To clarify, one of the corners may be flattened rather than coming to a point, or perhaps there is a dot on the plastic. That is the pin 1 designator.
     
  15. James Lundmark

    James Lundmark New Member

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    Not sure which corner is different. Photo of chip attached. Cannot locate Y1. Advise, thanks
     

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  16. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    I don't really see what you're asking any more?, your broken part is a 32KHz clock crystal.
     
  17. ci139

    ci139 Active Member

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    Last edited: Jul 30, 2017
  18. James Lundmark

    James Lundmark New Member

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    Sorry, i guess i missed something. My board is for an irrigation control. I didnt make the conne tion witb a clock crystal. Thanks
     
  19. James Lundmark

    James Lundmark New Member

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    I see several different 32khz crystals. Will any work or should i be looking at a specific series or other parameter. Thanks
     
  20. KeepItSimpleStupid

    KeepItSimpleStupid Well-Known Member Most Helpful Member

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  21. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    They all seem pretty well the same, I usually get mine out of old equipment :D

    A good source is old VCR remote controls, which have an LCD display on them - it's easier to find them inside the remote, rather than inside the VCR.
     

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