LC-32D44U
6 – 4
No video (4)
No video at UHF/VHF broadcast signal reception No video at digital broadcast signal reception
Is the specified TV signal selected on the input select menu screen?
Is video signal fed to AM19 of IC8001 via a buffer amplifier? Are there the video signal outputs (IF_OUT_P/N) at the pins(19) and (20)
of tuner(TU1101)?
YES
NO
YES
NO
Check TU1101 and its peripheral circuits(SDA3/
SCL3, etc.).
Check TU1101 and its peripheral circuits (SDA/
SCL3, etc.).
Check the line between AM19 of IC8001 and pin
13 of TU1101 (Q510, etc.).
Check the line between (AM33, AM34) of IC8001
and (pin(19), pin(20)) of TU1101.
Are digital video (LVDS) signals sent from pins B5~7, C5~7, D5~7, and E5~7 of IC8001?
YES
NO
Check the line between IC8001 and IC5103.
Check IC8001 and peripheral circuits.
Are digital video (RSDS) signals sent from IC5103 to SC5201 and
SC5202?
NO Check the line between IC5103 and SC5201 and
SC5202.
YES
Check IC5103 and peripheral circuits.
Check between (SC5201, SC5202) and LCD Panel.
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