Jon,
            also check the continuity of the cable to and including the coil
   the coil should have 1000 or so turns on it of fine wire,   I would=20
expect a resistance of maybe  1 to 3 ohms

Dave



At 11:15 PM 5/4/2009 +0000, you wrote:
>Hi
>
>This is not the cable. This appears to be the coil. I have tried to fix
>it, but it doesn't appear to work.
>
>This happens when I just got my lehman seismomter to work as it should
>have. It now has a period of ~5 seconds with out special setup (0.2Hz).
>
>I don't know what did happen, this just stopped working. :-(
>
>Regards.
>J=F3n Fr=EDmann.




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