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37GT-28FP
NO VERTICAL SCAN
Is IC501
YES
NO
bias normal?
Check R510, Q501,
Check D709, D710, IC501
Q502, Q503
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
Check IC801, C815, C816, R818
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
Readjust Vertical Size.
Vertical size is abnormal
Vertical linearity is abnormal
Check Q505, Q507, Q509
Check D505, D506
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