N8-42P650A11 Trouble shooting

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  • Packard93
    Senior Member
    • Jul 2016
    • 81
    • United States
    #1

    N8-42P650A11 Trouble shooting

    INSIGNIA N8-42P650A11 Troubleshooting this samsung tv rebrand insignia.


    Get a series of 5 relay clicks

    checks
    SMPS TO MAINBOARD CHECKS
    CN801 TO MAINBOARD


    HERE ARE ALL THE PINS FROM POWER SUPPLY TO MAIN i TESTED
    PIN 1 PS_ON TEST O VOLTS nOT SURE IF THIS IS CORRECT i GET NO VOLTS HERE
    PIN 2 STD5V TEST 5.2 VOLTS TEST GOOD logic board connected 5.2 i do get standby only then
    PIN 3 GND
    PIN 4 15VOLTS 15.01 VOLTS TEST OK logic board connected 0 volts tested
    PIN 5 GND
    PIN 6 GND
    PIN 7 5.3 VOLTS 5.17 VOLTS ? logic board connected 0 volts tested
    PIN 8 5.3 VOLTS 5.17 VOLTS ?logic board connected 0 volts tested
    PIN 9 GND
    PIN 10 15VOLTS 15VOLTS OK logic board connected 0 volts tested
    PIN 11 15VOLTS 15 VOLTS OK logic board connected 0 volts tested
    PIN 12 5.3 VOLTS 5.16 TEST ? logic board connected 0 volts tested


    LOGIC BOARD CHECKS RELAY WILL CLICK AND VOLTAGES GO TO 0 ALL PINS
    WHEN LOGIC I NOT CONNECTED I GET THESE ON THE SUPPLY
    PIN 1 5.3 CONNECTED 0 NOT CONNECTED VOLTAGE IS STEADY
    PIN 2 5.3 CONNECTED 0 VOLTS CONNECTED DROPS TO 0
    PIN 3 GND
    PIN 4 GND
    PS_ON
    VS_ON

    Anytime the logic board connect im gettting a relay click on the power supply . I can connect all boards without the logic board the power supply wont click 5 times.


    SUPPLY PINS TO MAINBOARD


    POWER SUPPLY TO LOGIC
    Last edited by Packard93; 08-01-2019, 01:15 AM.
    Tags: None
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