Vizio P50HDTV10A Service Manual page 26

PDP DISPLAY NOTHING(Analog HD1 without Pb signal)
BLOCK 1
Is picture on screen?
PDP DISPLAY NOTHING(Analog HD1 without Pr signal)
BLOCK 1
Is picture on screen?
PDP DISPLAY NOTHING(Analog HD1 on PIP mode without Y signal)
BLOCK 1
Is picture on screen?
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No No
Check component 1 Trace componect 1 from
(Pb signal) C259 Input To U13 circuit
Is there sync? Check R196,R198
Yes
No
Use GProbe connect
from main to PC. U13 fail
Does scaler detect the signal?
No No
Check component 1 Trace componect 1 from
(Pr signal) C264 Input To U13 circuit
Is there sync? Check R204,R201
Yes
No
Use GProbe connect
from main to PC. U13 fail
Does scaler detect the signal?
No No
Check component 1 Trace componect 1 from
(Y signal) =>C255 Input To U10 circuit
Is there sync? Check R193,R191
Yes
No
Use GProbe connect
U10 fail
from main to PC.
Does scaler detect the signal?
2
Page 9-7
File No. SG-0219