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NO SOUND (PICTURE OK) (No AM Sound) NO Check the Audio signal of pin25 of IC604 normal (No NICAM or FM Sound) Check whether Sound system of MENU OSD is correct or not Incorrect
Check/Replace IC604
Yes
Correct
Set correct Sound system
Check the Audio signal of pin44 of ICN01 normal
Yes
Is the SIF signal of pin24 of IC604 normal
NO
NO Yes
Check/Replace IC101
Check AM line
Are the Audio signal of pin24, 25 of ICN01 normal?
NO
Yes
Check/Replace XN01, ICN01
Are the Audio signal of pin1, 9 of IC601 normal
NO
Yes NO
Check RO LO lines.
Check the voltage of Q601 Base.
0V Check/Replace Q601, IC101, Q602, D601, D602, R612, R614 Are the Audio signal of pin4, 6 of IC601 normal? NO
Yes
Check the voltage of pin7 of IC601
Check/Replace C614, C615, D603, D604, Speaker Yes Check/Replace IC601
NO
Check/Replace F802, D814, L801
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