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Charles, unplugf the Y and Z sustain boards from the power supply. Probe from ground on the connector of both boards to VS and VG, etc. if there is a dead short, goodbye power supply. Shorts are most likely residing in those IPM modules under the big heat sinks on the Y and Z boards. These boards ate to the left and right of the power supply. Z fires the plasma gas, Y gives the screen data.
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Honey, turn on the tv.. I'm cold!
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