I have a problem with a Samsung LCD TV LNS3241. Current condition: dark screen, backlight on, several multicolored lines, no menu. Utilizing the info in this marvelous forum, I have already replaced four capacitors on the upper right of the power board which is BN96-03057A. The tv now powers up much more quickly, but the picture is unchanged. Any help greatly appreciated.
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Can you show a picture of the fault?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Samsung LNS3241 no picture, scattered multicolor lines
There is no change across inputs.Attached FilesComment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
OK, can you provide a picture of the back of the set, cover removed?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Here it is.Attached FilesComment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
OK, the top most board, can you get a closer picture of it? Try to get as best focus as possible with minimal glare.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
The t-con, correct?Attached FilesComment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
I've highlighted some parts on the t-con.
For each part, please note down the reference code (IC### or U###), the part number (e.g. LD1117-29), and test the DC voltage on each pin, with reference to chassis ground.Attached FilesPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Readings from analog meter.
Wide tabs match middle of three.
From the left:
UP4
L1117DG
2.2
4.0 (top to bottom)
5.8
U14
MMC6100B
0
1 (top to bottom)
5.8
UP2
059I4
5.8
3.8 (L to R)
0Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
I suspect MMC6100B to be your fault, it is a common problem on these T-cons, though I am not certain about the others. Can you verify #1 and #2? Also, any other digits printed on those regulators, below the main part #?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Went to 2.5V scale, same readings.
NIKOS
L1117DG
QA5C11F16
MMC6100B
25 F16B
AK33P
059I4Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Uh, do you happen to be using an analog multimeter? A digital one is preferred, as an analog meter simply doesn't have sufficient accuracy or resolution.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Sorry, that is all that I currently own.
I have a few defunct boards, but I doubt I can match that part. Looks like that single regulator would be a significant fraction of the cost of a t-con board.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
Replacing the T-con might fix your problem, but without checking the voltages accurately, no way to be certain.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung LNS3241 no picture, scattered multicolor lines
T-con fixed it. Thank you for your help!Comment
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