Samsung UN75ES9000F, Service Manual, Page: 32 / 114

4. Troubleshooting
4-1. Troubleshooting
4-1-1. Previous check
Check the various cable connections first. 1.
Check to see if there is a burnt or damaged cable.
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Check to see if there is a disconnected or loose cable connection.
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Check to see if the cables are connected according to the connection diagram.
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Check the power input to the Main Board. 2.
Main Board
MoIP Module
Speaker
Power Board
Power Cable
LVDS Cable
How to distinguish if the problem is caused by Main board or T-CON
„
No Video : If the problem is No Video but BLU is on and Indication LED is blinking repeatedly and faster than nomal 1.
booting, replace the T-CON board.
Distorted Picture : Check the inner patterns.
2.
For All mode
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Echo-P Echo-FP Pre Echo-P FP Post Picture Problem
OK OK OK NG Main Board or Signal Source
NG OK OK NG Main Board
NG NG OK NG Main Board or FRC Setting
NG NG NG NG Main Board or LVDS Cable or T-CON or Panel
Only for HDMI mode (additional check)
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HDMI Picture Problem
OK NG There is no problems after HDMI IC check HDMI source or HDMI jack.
NG NG There is no problems before HDMI IC check Echo-P pattern or LVDS cable or T-CON.
4-1
4. Troubleshooting