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hanks424
New Member
Last Activity: 11-26-2013, 10:05 PM
Joined: 11-18-2013
Location: pompano florida
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  • hanks424
    replied to Vizio E371 Completely Dead
    in Troubleshooting TVs and Video Sources
    Re: Vizio E371 Completely Dead

    To BUDM: PS_ON is [U]not [/U]functioning via the video board. Video board was disconnected -- I turned the 12v bus and inverter trigger on manually at the power suppy.

    I'd really like to run this down -- lost without schematic Re: Vizio E371 Completely Dead

    To BUDM: PS_ON is [U]not [/U]functioning via the video board. Video board was disconnected -- I turned the 12v bus and inverter trigger on manually at the power suppy.

    I'd really like to run this down -- lost without schematic     Re: Vizio E371 Completely
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  • hanks424
    replied to Vizio E371 Completely Dead
    in Troubleshooting TVs and Video Sources
    Re: Vizio E371 Completely Dead

    The power board checks out OK (380 volts across capacitor) - problem is no turn-on signal from the video board. Can anyone help with a schematic or circuit description for this board? Does EPROM control feedback to power board? Since we're not getting amber logo on startup, I'd like to focus on the components that trigger turn-on signal.
    Ideas welcome :-)
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  • hanks424
    replied to Vizio E371 Completely Dead
    in Troubleshooting TVs and Video Sources
    Re: Vizio E371 Completely Dead

    On the main board I read 5.1 volts both sides FP1, and 5 mV both sides on FP2 (should be 12 v). Obviously the video board is not turning on the 12v supply. As mentioned the power supply outputs 12v when triggering it alone via on-off pins (3 and 4)
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  • hanks424
    replied to Vizio E371 Completely Dead
    in Troubleshooting TVs and Video Sources
    Re: Vizio E371 Completely Dead

    No difference: cold start 82.3 degrees, plug in power, temp stays @ 82.3
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  • hanks424
    started a topic Vizio E371 Completely Dead
    in Troubleshooting TVs and Video Sources

    Vizio E371 Completely Dead

    No amber Vizio, LCD TV completely dead.

    Power supply outputs 5v, outputs 12v and inverter backlights when pins 3 & 4 supplied 5 v via 100 ohm resistors with voltage & video board disconnected. Power supply OK?

    All fuses on both boards OK, caps look OK, could only find 2 regulators on video board (UP3 UP13) both have extremely low voltage (165 mV in .8mV out)

    Any ideas how to proceed?...
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  • hanks424
    replied to New Members - please post your introductions here
    in Announcements & Related News
    Re: New Members - please post your introductions here

    Hello all - Looks like a great asset for TV repair! Trying to find a SM for my Vizio E371VL (totally dead, no 12v, 5 v only when disconnected)
    Looked at Toms - no joy. Plan to lurk a while before uploading pics
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