Document: After-sales Maintenance Service Manual No.: L32R63*VKE/L40R63*VKE/L43R63*VKE/L49R63*VKE Version: 1.0 Effective from: APRIL 4th, 2016
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9. Poor embedded power supply of TV
Power on, check embedded power supply 5VSB in TV for 5V
voltage output
High electrical level existed at
STB (higher than 2.5V)
Check power supply line for looseness, check
indictor for working and power supply socket for
looseness
NO
YES
Check +5V,
+12V
for normal input
Fasten lines and
socket
Replace power
supply
Check EC2 for 380-400V
voltage; if there is not,
replace power supply
YES
YES
NO
NO
Replace power supply
NO
10. Common fault of LCD screen
10.1 Bright line or bright belt (BL): constant longitudinal or transverse illuminating line or belt due to
non-conformed connection between IC and glass 10.2 Dark line (DL): constant longitudinal or
transverse illuminating line due to non-conformed connection between IC and glass.
10.3 White panel (WP): only light tube illuminates owing to non-conformed drive plate of the LCD,
without any display signal in the display area, and the whole screen is white.
10.4 Screen breaking: (overflow of LCD): with damage or invisible damage of the liquid crystal glass,
irregular black defect occurs from liquid crystal body to glass and polarizer, which can not be
seen at any image. The overflow portion can not form image and does not display.
10.5 Pressing Scrape (PS): after local display area at the front of LCD is heavily pressed, glass of the
pressed portion is not damaged, the liquid crystal body can not display normally, with spot or
block black defect.
10.6 Screen mess: irregular color display arising from damage of driving plate in LCD.
L32R63_VKE,L40R63_VKE,L43R63_VKE,L49R63_VKE_CIS_Russia.indd 8
2016-04-05 오전 11:00:48
