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Only for training and service purposes
Check input signal format.
Is it supported?
Check JK3200/JK3202/JK3203
Can you see the normal waveform?
Replace JK3200/JK3202/JK3203
Y
N
Check AC cable for damage
For damage or open conductor
Y
Y
Check Audio AMP output
L5503,L5504,L5505,L5506
Y
Replace L5503,L5504,L5505,L5506
N
This board has big problem because Main chip (M14+) have some troubles.
After checking thoroughly all path once again, You should decide to replace M14+ or not.
9. HDMI Audio (in) Trouble shooting guide
Summary of Contents for 40LX770H
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