Elektroda.pl
Elektroda.pl
X
Proszę, dodaj wyjątek www.elektroda.pl do Adblock.
Dzięki temu, że oglądasz reklamy, wspierasz portal i użytkowników.

TV Samsung LE-23R86 PSU started repeatedly

Martin-H 09 Lip 2015 09:32 3444 1
  • #1 09 Lip 2015 09:32
    Martin-H
    Poziom 13  

    Samsung LE-23R86, psu pcb SMA23-P Dongyang manufacturer

    PSU starting repeatedly, led blinking, beeping, Backlight on ca 1 sec and shutdown - repeatedly.
    Remove the PSU, shorted QB851 (forced ON), 24V have ca 24,9V, 12V have ca 11,6V, but after load (24V ca 1,5Amps or 12V ca 1 A) voltage breakdown to 15V in 24V section and 8,8V in 12V section. Fault - QM802 2SC2412K (but diode-test OK). CM806 - burst mode, CM807 - full mode and CM807 is not switching.

  • #2 16 Lis 2016 19:42
    fredaelsadany
    Poziom 9  

    hi
    check cm809(100uf/50v)
    change qm803
    if the circuit not working good change icm801s .
    thanks

    fredaelsadany