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Lg 42lk450 service mode - LG 42 42LK450 42 LCD TV

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No picture on LG 42LK450-UB TV Red standby light at plug in and blue light on power. Removed cover and no backlights lit Is the board that drives the backlights bad and is board part of the PS board.


Hey Marc,
You question is a little open..... there is more info needed to help narrow down the problem. If it is a backlight issue you should still get sound out of it and you should be able to take a flashlight and shine it on the screen and start to see a picture( note this part takes a little patience and staring, it will be hard to see it but you will if it is there). The backlight driver board is a separate board ( here it is at shopjimmy http://www.shopjimmy.com/auo-19-42t14-001-backlight-inverter.htm ) You could also have a bad main board: example- no back light, no pic, no sound, but it seems to turn on and off. In that example the firmware on the main board became corrupted due to a failing board, so check those places above and feel free to order that backlight board.

Jan 17, 2017 | LG 42LK450 - 42 Inch 1080p LCD TV...

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How do I restore factory default settings on an LG TV Model 42LK450-UH?


You can download the manual here: Product Support

At the right side of the picture of the TV it stays Manuals and Documents.

Jan 01, 2015 | LG 42LG50 42 in. LCD HDTV

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LG LCD TV 42LK450 - Sound but screen is black..


Sorry but you have a bad panel. Repair cost is prohibitive. The T-con was a good choice, but is the last step to the panel.

Feb 13, 2014 | LG 42 42LK450 42 LCD TV

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Cleaning


If water have entered inside the panel, you have to disassemble the set's panel to wipe it out. Normally, there is no possibility to enter water into the panel. Anyway, it will be best to contact any service technician. Disasembling panel is a skilled work.

May 23, 2013 | LG 42 42LK450 42 LCD TV

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LG 42LK450 flat screen.I tried auto tuning but didn't pickup channel 31. I tried manual tuning with no result. The old style TV I had prior to this could pick up channel 31 so it isn't a reception...


If your trying to receive over the air make sure the TV is not set to a Cable mode, if your on Cable your new TV is most likely a ATSC tuner (digital) and the cable company can map channels any way they want. If your old TV had the older style cable tuner, the lineup will be different.
HDTV has level thresholds, if the signal is weak you wont see anything, but the old TV would.
Without knowing much about where or what sort of TV your using, these are my best ideas.

Oct 26, 2011 | LG 42 42LK450 42 LCD TV

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