Re: VIZIO E550VL Obvious Damage Need help
What I found is a bad design. The mosfets short because the main oscillator chip timing to the P and N mosfets at the same time causes the short that causes the high current that burns the traces, connectors and wire. The mosfets are both on at same time. Normally the P or the N channel mosfets conduct, produces a positive or negative voltage to the transformers for the backlight. In other words, it creates the ac signals.
What I found is a bad design. The mosfets short because the main oscillator chip timing to the P and N mosfets at the same time causes the short that causes the high current that burns the traces, connectors and wire. The mosfets are both on at same time. Normally the P or the N channel mosfets conduct, produces a positive or negative voltage to the transformers for the backlight. In other words, it creates the ac signals.
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