LG SJ3 - Automatic Power Management

3-3
ONE POINT REPAIR GUIDE
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.
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.
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L604
L604
IC609
IC609
L605
L605
L606
L606
IC608
IC608
IC605
IC605
L603
L603