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70402RE: [softrock40] Re: Did I kill my Si570?

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  • MIKE DURKIN
    Nov 25, 2012
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      Pull the AVR ... take it out of the equation. With power only to the Si570 it should oscillate at its default freq ... check with scope ... both input data lines should be high.

      Mike KC7NOA


      To: softrock40@yahoogroups.com
      From: m6bvj@...
      Date: Sun, 25 Nov 2012 19:28:56 +0000
      Subject: [softrock40] Re: Did I kill my Si570?

       


      --- In softrock40@yahoogroups.com, MIKE DURKIN <Patriot121@...> wrote:
      >
      > Re-flow the si570

      Done - twice

      >remove most of the solder and recheck...

      Yup,

      >might be a solder bridge ...

      Don't think so

      >or wrong startup freq.

      Well it appears to be OK 28.2MHz

      > Got a scope? See if it has output on the output pins(pin if Cmos)

      Yes, and no in that order :-( well there might be fleeting bits of signal as the xo jumps to a 'sensible' value than the off again.

      Nick


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