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Contribution d'origine par : honakrisi ,

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Hi @ralphr0203 ,

On an 820-2877 motherboard like yours, you should be getting around 50V at pin 18 and 19 on the screen connector (J9000). If you are not getting it at all it means that the line is shorted to ground. If you are getting around 5-8V it means there is something wrong with your boost/feedback circuit. Look for signs of corrosion/burn marks on the connector or on the components on the same circuitry.

See attached images for guidance.

[image|2331716]

[image|2331718]

[image|2331715]

[image|2331717]

Hope it helps!

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