Service manual

Change Panel
Still having problems
No picture but h ave sound
Check if there is +5V at Pin35 in CN5
No
Replace the Q800
Yes
Check if there is +26V at C931
Yes
No
Check if U3 Pin20 ˄3.3V˅ǃPin11˄5V˅ǃ Pin19˄5V˅;U5 ˖
Pin2(0.72V)ǃPin3 ˄5V˅ǃPin4(12V)ǃ
Pin6(5.7V) is normal
Change LVDS wire
No
Replace U3 or U5
Check if Q103 ǃ FB13ǃ D10ǃ D9 ǃ
R700 is working
Yes
Replace Q103ǃ FB13ǃD10ǃ D9
No
Service Manual
Model No.:
9-2. Main board failure check
- 49 -