LG / GOLDSTAR MS71A
Instrukcja Serwisowa

NO SOUND (PICTURE OK)
Check Sound system of station MENU OSD (Manual Programme) BG/I/DK M

Is the voltage at pin 25 of IC1 0V(Low)? Yes

Is the voltage at Pin 25 of IC1 5V(High)? Yes

Is the SIF signal at Pin 24 of ICI1 normal?

No Check/Replace ICI1

Yes Are the Audio signal at Pin 28, 29 of ICS1 normal?

No Check/Replace ICI2, ICS6, ICS1

Yes Are the Audio signal at Pins 2, 5 of IC601 normal?

No Check/Replace ICS60

Yes Are the Audio signal at Pins 7, 11 of IC601 normal?

No Check the voltage at Pin 10 of IC601

Yes Check/Replace P601, P602, Speaker