Checkpoints By Error Mode - Samsung MM-DA25 Service Manual

Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 No Power
The power does not turn on.
MAIN PCB PCW3 Pin 10
voltage (5.60V)?
Check for
POWER-SENSE (5V) in
MAIN PCB PCW3 pin 11
Check VFD Voltage in
MAIN PCB PCW3
pin 15, 14, 13
Check for RESET/OSC parts in Main
PCB: X-TAL1, UQ1
4-2
Yes
Yes
Yes
No
No
No
CHECK or REPLACE SMPS
CHECK or REPLACE SMPS
CHECK or REPLACE SMPS
Samsung Electronics