Samsung RH62K Series Service Manual page 66

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TROUBLESHOOTING
4-3-1. Power Not Supplied (SMPS PCB) (RH57H*, RH77H*)
Input terminal
CAUTION AC input power and high voltage of
DC 310V or higher are generated at
SMPS PCB and INVERTER PCB
power terminal. Be cautious during
repair and measurement.
Checking voltage at
- Checking connection of main PCB
- Checking connection between upper hinge
and door
- Checking connection of door panel PCB
RS6500KC(RH62K)-FSR-160106.indd 66
Is power plug connected?
Is normal voltage of 12V
and 5V generated on SMPS
output terminal?
SMPS
Is operation of panel
Is soldering short or
cracked on PCB?
Normal (checking again)
Output terminal
Start
No
Yes
No
Yes
No
PCB normal?
Yes
Yes
No
66
Connect the plug, or correct loose plug.
PCB assembly replacing
1) Checking and repair of power cable
assembling
2) Panel PCB replacing
1) Soldering again
2) Main PCB replacing
2016. 1. 7. 11:04