On-circuit measurement means that the integrated circuit does not need to be removed from the power board, in electricity
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Direct measurement on the source board. For integrated circuits
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The letter: U.
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Pins of a dual in-line integrated circuit.
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Integrated circuits have numbers as well as letters oriented towards themselves, and
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Make it pin down. On the front left side of the integrated circuit
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Positioning marks such as pits, color spots, small holes or missing corners.
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The first pin is at the bottom left of the positioning mark, (on one side
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Four pins, four pins on the other side, two sides
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There are eight pins) from left to right
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Second pin, third pin, fourth pin,
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Fifth pin, sixth pin, seventh pin,
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The eighth pin.
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Set the digital multimeter to buzzer and touch the red pen
1: If it is a single 8-pin, that is, 1, 2, 3 feet sound for the S pole, 4 feet G pole, 5, 6, 7, 8 feet for the D pole, with the diode red pen of the multimeter connected to the S pole, the black pen connected to the D pole, the normal should be about 400 euros, is good, SG pole, DG pole are infinite.
2: If it is double 8-foot, it depends on the specific model.