Service Flow Chart
N
Y
N
Y
N
Y
N
Y
Has video, no audio
Check if the volume has set to “0” or if it is "mute:
Check if the earphone plug in
Check the audio line & t he audio input circuit is OK
Reset the volume and
remove the earphone line
Fix it
Check voltage of amplifier "mute” pin is “low" level
Check the voltage of CA14 or CA1
Check the mute circuit Q24 Q22
Change the amplifier IC V1
Change D3
-
38
-
Summary of Contents for 8M39A/E
Page 3: ...3 LCD 8M39A E chassis...
Page 4: ...70 90 120 For 22LED For 24LED For 32LCD For 22LED For 24LED For 32LCD 250 300 350 4...
Page 5: ...22 24 is 4 ohm For 32LCD For 32LCD 22 24 is 3W x 2 5...
Page 6: ...40 40 3 2 1 4 2 50 0 5 80 40 12000 24 22 24 is 12V 6 6...
Page 7: ...1080 1920 uv uv 40 YES 8 6 46 46 NO NO Standard English Standard 20 Middle 7...
Page 8: ...4 2 4 0 40 70 0 40 70 0 40 40 85 Y0 50 30000 8...
Page 23: ...PCB POWER FRONT 23...
Page 24: ...PCB POWER BACK 24...
Page 25: ...MAIN PCB TOP 25...
Page 26: ...MAIN PCB BOT 26...
