Read LG 55GA7900-UA (CHASSIS:LA37G) Service Manual online
Check technical
information
- Fix information
- S/W Version
information
- Fix information
- S/W Version
N
Y
Technical
information?
Check
input
signal
input
signal
Signal
input?
Y
N
External Input and
Component
Recognition error
Check and fix
external device/cable
external device/cable
HDMI/
DVI, Optical
Recognition error
Replace Main B/D
Replace Main B/D
Fix in
accordance
with technical
information
D. Function error
External device recognition error
Established
date
Revised date
LCD TV
Error
symptom
Standard Repair Process
46
2012.01.16
2013.01.30
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