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Whether you are fixing the 5VSB standby using the Viper22A circuit or hunting down a short in the 24V rectifiers, use this guide as your map. Remember: high voltage is present. Measure twice, solder once.
The Primary side (hot ground) contains lethal voltages up to 400V DC. Capacitors discharge slowly. Always discharge the large 450V capacitor (C605) with a 10k ohm resistor before probing. The Exclusive Pinout Analysis (Standby Connector CN955) Most "dead TV" faults start here. Without the official diagram, you might confuse the PS-ON and BL-ON lines. Use this exclusive mapping for CN955 (12-pin connector to the main logic board): tpv56pb801 schematic diagram exclusive
Below is a quick exclusive reference table without the need for the full PDF: Whether you are fixing the 5VSB standby using