How to troubleshoot power failure, power protection, power [SMPS] and main amplifier schematic - Samsung HTz210
Measures to be taken when the Protection Circuit operates
Measures to be taken when the Protection Circuit operates
Operation
of Power Block Protection Circuit
The
Condition of Power Protection Active.
1. Voltage of SMPS’s PVDD (+34.5V, J3) is higher or lower than Standards.
Normal Condition Voltage Range: PVDD (+34.5V, J3): about +34.5V
2. Over-current occurs to AMP IC. (Over-output or Output short)
3. AMP IC’s temperature exceeds 150°C.
4. No supply voltage on GATE DRIVER
1. Voltage of SMPS’s PVDD (+34.5V, J3) is higher or lower than Standards.
Normal Condition Voltage Range: PVDD (+34.5V, J3): about +34.5V
2. Over-current occurs to AMP IC. (Over-output or Output short)
3. AMP IC’s temperature exceeds 150°C.
4. No supply voltage on GATE DRIVER
SMPS board & circuit diagram
Power
Protection
* OTW:
Active, IC’s inner temperature exceeds over 150°C. (Under 2.7V, Protection Circuit wills Active)
* TAS5352
3rd PIN: Shout down (Under 2.7V,
Protection Circuit wills Active)
Total power failure troubleshooting
Check
Amp in Power Protection
[check
AMP Malfunction before disassembling Main Unit (Do NOT Insert AC-Cord in
AC-Socket)]
Connector voltages
Amplifier schematic
