LG NP8540 - Electrical Troubleshooting Guide; Power Supply on Main Board

3-14
ELECTRICAL TROUBLESHOOTING GUIDE
No 18 VA
Is the F900 normal?
Is the D901 normal?
Is C908/ 917/ 922/ 919 normal?
Replace F900 (same fuse).
Replace D901.
Replace C908/ 917/ 922/ 919.
Check JK900 and replace it.
YES
YES
YES
YES
NO
NO
NO
1. POWER SUPPLY ON MAIN BOARD
No 5.2 VA
Is the Vcc of IC903 18 VA?
Is the L906 of IC903 5.2 VA?
Around the parts OK? (RLC)
Check the 18 V.
Replace the weird one.
Replace IC903.
OK
YES
YES
YES
YES
NO
NO
NO