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Thread: Newly rebuilt 3400. Amps was working and stopped

  1. #1

    Newly rebuilt 3400. Amps was working and stopped

    Looking for input please. Newly factory rebuilt 3400. Amps was working now has stopped. Shunt is installed. Wiring all good. Looking for resolution. Disappointing as only flew airplane once since rebuild. Thanks in "advance" Gary...it is showing now a horizontal dash on the display
    Last edited by garywallace; 07-29-2022 at 07:58 AM.

  2. #2
    Sorry to hear of the problems you are having, Gary, but it needs to be established that there is nothing new about a 3400 model EFIS, and we do not offer any sort of a service in which these displays are rebuilt to an "as-new" or "like-new" state. If we received your EFIS for RMA service it would have been repaired and warrantied exclusively against the issue disclosed and fixed through the RMA. We may and often do take additional preventive measures, such as replacement of dead backup batteries, capacitors or diodes known to age faster than usual, etc., but our RMA service does not constitute a rebuild in any vernacular sense of that word.

    On the CHECK --> MAINT --> ADMIN --> CALIBRATION (hold2s) --> Amperage (shunt) menu, what is your AD_VALUE number with the engine and alternator off? Does it change if you remove the 37 pin EMS sensor connector from the back of the EFIS?

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