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Davepii

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Posts posted by Davepii

  1. See if this helps you. see attached.

    I have had some luck repairing these with a simple reflow process.

    I remove the PC board from the case and reflow it in my wife's oven. Its easy while she is asleep, i fill at pan with a layer of fine pool sand. then cover the sand with aluminum foil, place the foil directly on top of the sand, such that no sand can touch the board. preheat the oven to about 450, when the oven is good and hot, place the bare board on the foil, it helps to place a blob of soldering flux on the board somewhere as an indicator of reaching the proper melting point. View the flux thru the glass of the oven door, so you can tell when you have reached a good reflow temperature for a minute of so, then without touching the pan or disturbing the pan just simply turn off the oven open the oven door and let it cool off slowly.

    walah you have reflowed the board, it solves a number of solder joint issues most of which are not visible on these dense multi layered boards.

     

     

    MC33888APNB.pdf

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