Wednesday, March 26, 2014

LG RZ37LZ55 - POWER SUPPLY SCHEMATIC (Circuit Diagram) - Faults - STR-T2268

                                             (CLICK ON THE SCHEMATIC TO ZOOM IN)
FUSE ==> T5A 250v
IC904 ==> STR-T2268
C920 ==> Capacitor 224k 50v
C921 ==> Capacitor 475k 16v
C924 ==> Capacitor 105k 16v
R290 ==> Resistor 331J

ZD911 ==> 1N5226B 3.3v Diode
Components that frequently blows out are:
R920 - 330R SMD resistor ZD911 - 1N5226B 3.3V zener diode.  R925 22R.  C920 - 220nF SMD capacitor. C921 - 4.7uF SMD capacitor. C924 - 1uF SMD capacitor. F901 - T5A 20mm fuse. IC904 - STR-T2268 (cracks and sometimes blows to bits )