How To Check Fault Symptom; Power - Samsung UN FH6200F Series Service Manual

4. Troubleshooting

4-2. How to Check Fault Symptom

4-2-1. NO Power
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
• The LEDs on The front panel do not work when connecting The power cord.
Symptom
• The SMPS relay does not work when connecting The power cord.
• The units appears to be dead.
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:
Major
• Check the internal cable connection status inside the unit.
checkpoints
• Check the fuses of each part.
• Check the output voltage of SMPS.
• Replace the Main Board.
Diagnostics
4-4
Power indicator LED is on?
Yes
Check the backlight on, when 20p cable
unconnected ?
Yes
Check 'Stand-By 5V' ?
BD203 : A5V
Yes
Check 'Power input of Main Ass'y' ?
BD206 : B18VS
BD207/208/209 : B13V
BD201 : B5V
Yes
Check 'Power IC output of Main Ass'y' ?
L202 : B3.3V / L203 : B1.2V
L204 : B1.1V / L201 : B1.5V
IC203 : 3.3V / IC208 : 3.3V
Yes
Check Input power of 'T-CON Board' ?
F11(T-CON) : B13V
Yes
Check Power of 'T-CON Board' ?
L9(T-CON) : VCC12
TP_VCC33 : VCC33
Yes
No Check a connetion power code.
No
No
Change 20p cable.
Change Main Power Ass'y.
No
No Change the Main Ass'y.
Reconnect or Change.
No
the LVDS cable.
No Change the T-CON Board.