Power On Error - LG SJ3 Service Manual

2. POWER ON ERROR

No display or Not working.
2-1. IC608 (NO 12 VA)
1) Check 12 VA at L604.
2) If 12 VA is not checked at the point, then find 24.5 V at pin2 of IC608.
3) 1), 2) is NG.  Replace IC608.
2-2. IC605 (NO 5.1 VA)
1) Check 5.1 VA at L603.
2) If 5.1 VA is not checked at the point, then find 12 VA at pin3 of IC605.
3) 1), 2) is NG.  Replace IC605.
L603 L603
2-3. IC609 (NO 3.3 VA/ 1.3 VA)
1) Check 3.3 VA at the L606 and 1.3 VA at the L605.
2) If 3.3 VA, 1.3 VA is not checked at the point, then find 5.1 VA at pin7 of IC609.
3) 1), 2) is NG.  Replace IC609.
IC609 IC609
L605 L605
ONE POINT REPAIR GUIDE
L604 L604
IC608 IC608
< MAIN board top view >
IC605 IC605
< MAIN board top view >
L606 L606
< MAIN board top view >
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