CE Tech Tips — June 2022
**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.
Reason for Service: No video or weak video. No voltage on ABL pin of the fly.
Solution: Replaced open RH28.
LG TV, 55GA6400
Reason for Service: Set has no audio.
Solution: Reflowing BGA on main board fixed set. IC100.
LG TV, 47LW5600
Reason for Service: Picture has horizontal lines across whole screen.
Solution: Reflowing BGA on main fixed set. IC101.
LG TV, 50PA4500
Reason for Service: Power button or remote will not turn set on.
Solution: Found bad cap in power supply, C802; replacing fixed set. .022mF/1600V
Mitsubishi TV, WDY57
Reason for Service: Set shuts off.
Solution: Cleaned filters and replaced sensor behind lamp.
Samsung TV, LN32B360C5d
Reason for Service: Set turns on one time at plug in, then won’t turn on again unless it’s unplugged first.
Solution: Repairing bad tab on power supply board used for CCFL tubes fixed set.
Sony TV, KDL-40V4100
Reason for Service: No video.
Solution: No 12V to T-Con; replaced U21, (AS15F) on T-Con and replaced F1422/1421 on BU Board.
Vizio TV, M552i-B2
Reason for Service: Dead set, power light doesn’t appear at power on.
Solution: IC901, ZD909, 4.7Vzener, D950B.
Vizio TV, E420VA
Reason for Service: Dead set.
Solution: Replaced small blue cap in power supply, C911, .01uF/1KV and F901, 5A fuse.
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