LG / GOLDSTAR CD371
Instrukcja Serwisowa

3] MAIN PART
� MAIN CIRCUIT A. MAIN
No Power at IC351 Pin 4,8

Is B+ applied to PN501? NO Check Fuse(F501, F502) YES

YES Check Q501,502 and Q503

Is there a DC voltage at the (+)terminal of D501~D504

Replace D501~D504 NO

Replace PN 501

B. TUNER
TUNER ABNORMAL.

Is B+ applied to R137,141? NO Is there a DC Voltage at the Q517,518 YES Replace IC101

Check IC101,102 YES

Check Q510,511 NO

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