HORIZONTAL DEFLECTION CIRCUIT DEFECTS
Power supply voltages are
OK. There is no high voltage
Check 15V at the collector of T503. NO Check and replace R503 and TR501 Hor.
Driver transformer
YES
Check the voltages 1.42 VDC and 0.92 VAC at Check voltage 8V at pin 9, 39 of IC101. If NO
+ pin of C502 present replace IC101.
YES
Check the voltages 0.28 VDC, 0.92 VAC and NO
15625 Hz signal at the base of T503. Check and replace D505 and C503.
YES
Remove T504. Check the voltage 145 VDC at Check and replace R525 and Line Output NO
the collector point. Transformer.
YES
Check 2 VAC at the base of T504. Check and replace T503, TR501 and R513. NO
YES
Check and replace D507, D508, C518, C519, Replace Line Output Transformer. NO
C521. Place T504 to its position. Check the
operation of Line Output Transformer.
YES
There is a noise heard from Line Output
Transformer. Check and replace T501, R516
and C520. |