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4-2
4. Troubleshooting
Simple flow chart of malfunction
Yes
No
Yes
Does the TV turn on?
Can you see anything
on the screen?
Yes
Can you see OSD menu
running on the screen?
Check LVDS cable connected
to Main Board.
If necessary,
replace the Main Board
Yes
Can you see Digital
Channel broadcast ?
Yes
Replace the Main Board
Check the Power Cord
Yes
No
No
Is standby LED on?
Yes
A5V appear at the pin
27 of CN201?
Yes
is any sound of TV?
Yes
Check dimming cable.
If necesary replace the
Main Board.
Yes
Check 30p cable.
If necessary, replace the
IP board.
Yes
B13V appear at the pin
9 or 10 of CN201?
Yes
Change the main board.
Please, contact Tech support
Summary of Contents for LN32B550K1R
Page 7: ...1 4 1 Precautions Memo ...
Page 29: ...4 7 4 Troubleshooting WAVEFORMS 1 R G B Output Signal ...
Page 31: ...4 9 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data ...
Page 33: ...4 11 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal ...
Page 35: ...4 13 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal ...
Page 37: ...4 15 4 Troubleshooting WAVEFORMS 2 Digital Output Data 5 Analog Signal Y C ...