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ONE POINT REPAIR GUIDE

No power problem occurs when you power on the unit.

1-2. VFD, 14 VA, 5.5 VA

1-2-1. Solution

Replace D922, D923, D924, D925, D926, D927, IC901.

1-2-2. How to troubleshoot (Countermeasure)

Case 1) FLD abnormal: Check D950, D951, ZD951, ZD952, FR950 and replace it.

Case 2) 5.5 VA abnormal: Check D952, D953 and replace it.

Case 3) 14 VA abnormal: Check D955, D956 and replace it.

Case 4) All voltage abnormal: Check IC901 and replace it.

1-2-3. Service hint (Any picture / Remark)

< SMPS board top view > < SMPS board bottom view >

Case 1

Case 2

Case 3

Case 4

LG LHD645 Service Manual

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