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Picture of Harlan RPM switch circuit

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Old 10-11-2008, 09:04 PM
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Picture of Harlan RPM switch circuit

Hi. My harlan RPM switch quit working. It looks like a resistor fell off but there could also be something else wrong with it. Does anyone have a picture of the RPM switch circuits?

Mooney
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Old 10-12-2008, 12:59 AM
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I just happened to have my Harlen RPM switch next to my desk and my phone so here you go.





I can get some better/clearer pics tomorrow if you want. Camera phone FTL.

Last edited by aznprid972; 10-12-2008 at 02:43 PM.
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Old 10-12-2008, 02:42 PM
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Click on the pic for higher resolution
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Old 10-12-2008, 05:14 PM
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Thanks. Mine looks the same; except for blue buttons . Maybe the micro controller went out. I will have to do some testing.

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Old 10-12-2008, 06:30 PM
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On mine, it says HARLAN '00 RPM V3.1 2003 but in the photo, it's covered up by the plastic end cap. Maybe there are different versions.

Have you tried redoing all the settings? Maybe that might fix it.
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