Read Sony KDL-42R500A / KDL-47R500A (serv.man2) Service Manual online
23
TROUBLE SHOOTING
3-3. NO PICTURE
KDL-42/47R500A(PA)
No picture
Press HOME Key.
Menu displayed?
Change Equipment
Or Player to check
TV display
No
Yes
Replace the
FFC(LVDS) Between
PSU and Panel
FFC(LVDS) issue
NG
Replace
PSU to Panel
Harness
Harness issue
Change
Main board
NG
NG
PSU issue
Change
Panel
Change PSU
NG
OK
OK
Symptom
improvement
improvement
Symptom
improvement
improvement
Main board issue
Check the harness
PSU to Panel
connection
NG
OK
Fix the harness
connection
Check the FFC(LVDS)
PSU to Panel
connection
NG
OK
Fix the FFC(LVDS)
connection
Change
Main board
No display
Signal or Equipment
Problem
OK
OK
OK
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