LG NP8540 Service Manual page 39
Wireless multi-room audio
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Also See for NP8540:
- Simple manual (77 pages) ,
- Owner's manual (62 pages) ,
- Manual (4 pages)
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ELECTRICAL TROUBLESHOOTING GUIDE
POWER SUPPLY ON MAIN BOARD
No 3.6 VA
Is the Vin 5.2 VA
supplied to IC904, L907?
Around the IC904 parts OK? (RLC)
Replace the IC904.
No 3.3 V
Is the Vin 18 VA
supplied to IC900, L900?
Around the IC900 parts OK? (RLC)
Replace the IC900.
YES
YES
YES
YES
YES
YES
NO
Check the IC903.
NO
Replace the weird one.
NO
NO
Replace the weird one.
3-16
Check the 18 V.
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