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JVC GRD72 camcorder won't run off battery

Discussion in 'Electronic Repair' started by Lachoneus, Mar 27, 2005.

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  1. Lachoneus

    Lachoneus Guest

    My JVC GRD72 miniDV camcorder will no longer run off battery power after
    I *ahem* *coughcough* snagged the power cable and knocked it off the
    table where it was charging. It landed on soft carpet and still
    works--I've operated it for more than an hour total time afterward, both
    recording and playback--but it will only run while plugged in, even
    though the battery was fully charged at the time of the accident.

    I suspect that the AC adapter socket was damaged in such a way that it
    thinks the adapter is always plugged in, even when it isn't, and that's
    why it refuses to switch to battery power. Does that sound reasonable?

    Or is it possible that the battery itself was broken in the fall? I
    measured 7.55V across its '+' and '-' terminals (the rated voltage is
    7.2V), but I don't know how to test the 'T' terminal, which is
    presumably a charge sensor.

    Any advice would be appreciated.
  2. I would take a look at the connection with the battery. A spring
    might have deformed, etc. when it fell.

    Since the power cable was attached when it was snagged, you might
    be right, the connector is bent and needs to be re-bent.

    Best regards
    Mark W. Lund, PhD ** Battery Chargers
    CEO ** Bulk Cells and Custom Battery Packs
    PowerStream Technology ** Custom Power Supplies
    140 S. Mountainway Drive ** DC/DC Converters
    Orem Utah 84058 ** Custom UPS ** Engineering, manufacturing, consulting
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