Samsung YP-R1 Service Manual page 26

4-1-5 If the LCD displays nothing
If the LCD displays nothing
Are the FPCB and the
connector connected properly?
Are the LED_PWM and LED_DIMMING
ports' voltages high?
Replace the board.
(Detailed inspection is required.)
Samsung Electronics
Yes
1
Yes  See the waveform and
the image in Fig. 4-6.
No
Connect the LCD FPCB and the
No
Disassemble the main body and
Troubleshooting
connector properly.
replace the LCD.
4-11