CASE
China 945
Problem : NO DISPLAY
DIAGNOSIS : RAM VOLTAGE FET VOLTAGE VARIATION
VARIATION ALSO ON GATE
TRACED IT
IT CONNECTED WITH LM324 IC
ON LM324 IC GATE PIN VOLTAGE OK BUT ONE RESISTOR CONNECTED THAT PIN FAULTY
Solution : change that one resistor only
MB OK
CHINA 945 NO DISPLAY
Desktop Motherboard case studies here
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