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32LS3800 (CHASSIS:LB21C, LB21F) - LG TV Service Manual (repair manual). Page 14

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Check RF Cable & Signal
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.8V Power 
IC3703  2 pin : 1.8V
jŒŠ’Gpm†wVuGzŽ•ˆ“
{|Z^WWGXWVXXGw•
Replace IC3703 
Check Mstar LVDS Output
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.
–’
–’
–’
–’
u–
u–
u–
u–
iˆ‹G{œ•Œ™UGyŒ—“ˆŠŒG{œ•Œ™
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2. Digital TV Video
3. Analog TV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.8V Power 
IC3703 2 pin : 1.8V
Replace IC3703 .
Check Mstar LVDS Output
yŒ—“ˆŠŒGtš›ˆ™OpjXWXPG–™Gtˆ•Gi–ˆ™‹
.
–’
–’
–’
u–
u–
u–
jŒŠ’Gj} izGzŽ•ˆ“
{|Z^WWG_Gw•
–’
u–
iˆ‹G{œ•Œ™UGyŒ—“ˆŠŒG{œ•Œ™
.
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