No picture (3)
No TV picture appear.
Is TV selected on the input select menu screen? Audio Only is off.
NO Select TV on the input select menu screen. Make sure NO NO Is TV video outputted to pin (5) (TP1101) See if the level control signal is coming from IC1104
YES
Is TV video signal outputted to pin (17) of tuner? Check the tuner and its peripheral circuits.
YES
IC1103 (LEVEL ADJ.)? to pin (6) of IC1103.
YES
Check IC3801 and its peripheral circuits.
Is the TV video signal inputted to pin (63) of IC3801 NO (AV SWITCH)?
YES NO YES NO
Are main sub video signal outputted pins (56) (44) of IC3801, respectively? Check the lines from IC3801 up to IC401 and IC600.
Is the video signal inputted to (8) IC401 (MAIN L.P.F.) and pin (2) of IC600 (SUB L.P.F.)?
YES <Main system>
3D-YC<PALNTSC> 2D-YC<SECAM> <Sub system> (8) IC402 (12) IC502 Is the video signal inputted to pin (72) of IC601 3D-YC (MAIN (SUB 2D-YC & CHROMA)?
YES NO
IC402. IC502. Check the line between IC401 and IC601.
(124) (115) Is the digital video signal outputted from pins (31) (140) (159) IC402? (126) well as (133) (144) IC502? thru (50) of IC601?
TROUBLE SHOOTING TABLE (Continued)
43
YES
Replace main PWB, or check the lines from IC402, IC502 and IC601 up to IC3201.
YES NO
IC402 IC502 Check IC601 and its peripheral circuits.
Is digital video signal inputted to the following pins of IC3201 (LVDS_TRANSMITTER): (53), (54), (57) (60), (51), (52)(RE0-7); (63) (68), (61), (62)(GE0-7); (73) thru (78), (69), (70)(BE0-7); (81) (86), (79), (80)(RO0-7); (91) (96), (89), (90)(GO0-7); (99), (100), (1), (2), (5), (6), (97), (98)(BO0-7); (7) thru (10)(HSYNC, VSYNC, DE, CLKIN)?
Is digital video signal outputted to the following pins of IC3201: (49)(TA1-), (48)(TAl+), (47)(TB1-), (46)(TBl+), (44)(TC1-), (43)(TCl+), (41)(TCLK-), (42)(TCLK+), (40)(TD1-), (39)(TD1+), (37)(TA2-), (36)(TA2+), (35)(TB2-), (34)(TB2+), (32)(TC2-), (31)(TC2+), (30)(TCLK2-), (29)(TCLK2+), (28)(TD2-) and (27)(TD2+)?
YES
the LCD control PWB. Check IC320 (LVDS_TRANSMITTER) and its peripheral circuits.
LC-26GA3H/M/X
