Saturday, May 11, 2013

SAMSUNG HT-C460 - HT-C460/XAZ - DIASSEMBLE PROCEDURE - MEASURES TO BE TAKEN WHEN PROTECTION CIRCUIT OPERATES



PROTECTION
The Condition of Power Protection Active.
Voltage of SMPS’s +, - PVDD (+30V, -30V) is higher or lower than Standards  Normal Condition Voltage Range: PVDD (+30V, -30V): about +30V, -30V
Over-current occurs to FET (Over-output or Output short)
FET’s temperature exceed 150°C.
No supply voltage on GATE DRIVER.
AMP  Pre-Inspection  relating to Power Protection.
If you think, there are problems at the AMP PCB, you can check the pcb without disassemble the set.
  • Side 2 points and rear 3 point screws uncrew.
  • Screws 3 point and wire seperation.
  • Pull out the wire from cabinet-front and main.
  • Pull out the cabinet-front.
  • Pull out the wire between PCB.
Unscrew the screws on the PCB.
Unscrew the screws on the SMPS PCB.
Unscrew the rear screws.
Disassemble complete.