Vizio VP50 HDTV20A Service Manual - Page 18

Composite, Video, Display, Correctly

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(TV, COMPOSITE VIDEO ) IS NOT DISPLAY CORRECTLY Start Input signal good? Yes U14 input correct? Yes U14 output correct? Yes LVDS output correct? Yes 1.Chcak J7 Connect is good? 2.Is panel working ok? N0 1.Check video 2.Check DVD player N0 1.Check P11(VIDEO) signal 2.Check signal between U14 (IF IN AV mode) 3.Check Tuner & U13 (IF TV mode) N0 1. Check U14 :DV33&DV12&AV15&AV12 2. Check X1 is OK? N0 1.Check LVDS LINE 2.Check U14 clock (27MHz) 3.Check LVDS 5V or 12V END CONFIDENTIAL - DO NOT COPY Page 9-2 File No. SG-0246

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CONFIDENTIAL
–
DO NOT COPY
Page
9-
2
File No. SG-0246
Yes
N0
N0
N0
Yes
Yes
Yes
N0
(TV,
COMPOSITE
VIDEO
)
IS
NOT
DISPLAY
CORRECTLY
Start
Input signal good?
1.Check video
2.Check DVD player
U14 input correct?
1.Check P11(VIDEO) signal
2.Check signal between U14 (IF IN AV
mode)
3.Check Tuner & U13 (IF TV mode)
LVDS output correct?
1. Check U14 :DV33&DV12&AV15&AV12
2. Check X1 is OK?
1.Chcak J7 Connect is good?
2.Is panel working ok?
END
U14 output correct?
1.Check LVDS LINE
2.Check U14 clock (27MHz)
3.Check LVDS 5V or 12V