you connect.
Service Manual
Model No.:
No sound but have picture
Verify if the speakers are
broken
No
Yes
Change the speakers
Verify if the main board has the
right input ,according to the source
TV/COMPONENT/AV/VGA/HDMI etc.
Yes
Verify if UA1 has the right
output
Yes
Check CN17 input is right
No
No
Check the corresponding audio
input circuit you connect.
Verify if UA1 has the right power in
No
Change UA1
Still having problems
Change Mainboard
40
40DR3505
Summary of Contents for 40DR3505
Page 10: ...Service Manual Model No 2 2 External pictures four faces Front Side Up Side 9 40DR3505 ...
Page 11: ...Service Manual Model No Right Side Back Side 10 40DR3505 ...
Page 16: ...Service Manual Model No 15 40DR3505 ...
Page 17: ...Service Manual Model No 4 3 LCD Panel Backlight Unit LVDS CONNECTOR CNF1 16 40DR3505 40DR3505 ...
Page 18: ...Service Manual Model No 17 40DR3505 ...
Page 31: ...Service Manual Model No 7 2 Wiring Connection Diagram 30 40DR3505 ...
Page 37: ...Service Manual Model No 9 2 Mainboard IC Introduction Top view 36 1 2 3 4 5 6 7 8 40DR3505 ...
Page 38: ...Service Manual Model No Bottom view 37 40DR3505 ...