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  1. MTG_IT_AV TECH

    Replacing a 617A56

    Greetings all, Have a 617A56 board that is causing a humming sound across ext on that board. Tried moving extension to isolate, moved board to another port and all troubleshooting leads to bad board. Ordered a replacement 617A56. Before I break anything further, I don’t recall if I can just...

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