55PMA550/55HDM71 (PW1)
Trouble of Sub picture
Are waveforms at TP03(H) andYes
Check Formatter PWB.
TP04(V) ?
No
Yes
Are waveforms at pin 19(H) andCheck I602
29(V) of I601?
No
Component Input (without 480i/576i)Video Input/Component(480i/576i)
YesYes
Are waveforms at pin1(H) andAre waveforms at pin26 of I601?Check I601
Pin2 (V) of I601?
NoNo
Check Q606, Q608, Q609,
Q610, etc.Yes
Are waveforms at pin9 (H) and
Check I602
pin4 (V) of I502?
No
Check I502,etc.
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