Samsung UN40C6300SF - No Power

4-7
4. Troubleshooting
4-2-1. No Power
※ Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
Symptom
The LEDs on the front panel do not work when connecting the power cord. -
The SMPS relay does not work when connecting the power cord. -
The units appears to be dead. -
Major
checkpoints
The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
Check the internal cable connection status inside the unit. -
Check the fuses of each part. -
Check the output voltage of SMPS. -
Replace the Main Board. -
Diagnostics
Please, Contact tech support.
Yes
Yes
Yes
Check Power of ‘T-con b’d’.
- L9(T-CON) : VCC12
- TP_VCC33 : VCC33
Check ‘Power IC output’ ?
- L201 : B3.3V
- L203 : B1.8V
- L204 : B1.1V
- L202 : B1.2V
Check Input power of ‘T-con b’d’ ?
- F1(T-CON) : B13V
No
No
No
Change the T-con B’d.
Change the Main Assy.
Reconnect or Change.
the LVDS cable.
Power indicator LED is on?
Yes
Yes
Yes
Yes
No
Check a connetion power code.
Check the backlight on,
when 18p cable unconnected ?
No
Change 18p cable.
Change Main Power Assy.
No
Check ‘Stand-By 5V’ ?
- BD202 : A5V
No
Check ‘Main power input’ ?
- BD201 : B18VS
- BD208 : B13V
- BD205 : B5V
Caution
Make sure to disconnect the power before working on the IP board.