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LC-32WD1E/S/RU and LC-32WT1E
NO picture on display via EXT-2 CVBS input
No picture on LCD screen when EXT-2 CVBS input source selected
Checklist:
1) Is "INPUT SOURCE" button
2) Is MENU-PICTURE-Contrast/Brightness set to "MIN" ? ==> Set it to appropriate level
3) Check connection to external device ==> Connect it correctly as per the operation manual for the device
Is composite video signal arriving to pin20B of SCART2 (X027-2) ?
Is CVBS signal present on both sides of C0169 ?
Is TDA15134E (D013) UOCV_DVCLK clock there
AND are the UOCV_DV(x) signals toggling?
are UOCV_DV(x) and UOCV_DVCLK signals arriving to
the CPLD (D080) (XC2C128-7TQG144C) ?
GOTO VIDEO PATH CHECK
on the remote control set up correctly ? ==> See operation manual and set "INPUT SOURCE" to "EXT2"
yes
yes
yes
yes
yes
Check external connection, input setting, SCART2 and peripheral
no
check C0169, check peripheral on SCART2_Y_CVBS_IN signal
(termination R, ESD protection diode,...)
no
TDA15134E (UOCV) (D013) is not functioning normal,
no
check GTV SW and peripherals (power supply,xtal,...) of D013
check resistor networks on UOCV_DV signals
no
6 - 8
circuits.
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