Re: Samsung Changing Vertical Color Bands Lines LN46A540
The main board tested out fine like you said using the LVDS settings.
Looks like it is the panel.
Thanks for all the info.
SteveTheBeave
New Member
Last Activity: 04-25-2012, 03:30 PM
Joined: 04-20-2012
Location: Atlanta, GA
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Re: Samsung Changing Vertical Color Bands Lines LN46A540
And one more note is that the block of bands come and go. The full picture is fine most of the time, but occasionally the bands with fade in with interference. It is not a sudden on/off situation. Thanks.Leave a comment:
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Re: Samsung Changing Vertical Color Bands Lines LN46A540
Just changed out the TCON board and no help.
I also tested the LVDS and no color change on the bands when I changed the options.
I want to eliminate the panel before I toss the whole TV.
I think my last two options are the cables from the TCON, or the board that the two flex cables from the TCON attach to. What are the two boards that the TCON attaches to at the top of the TV?
One side note, I also noticed that the bands change color to whatever the color scheme on...Leave a comment:
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Re: Samsung Changing Vertical Color Bands Lines LN46A540
Got the TCON out. Not sure which of the numbers you need, sticker or etched (see pic).
I searched for the FHD number and found a bunch of used ones. Seems a bit daft to purchase a used one.
Please let me know if you know of a source for a cheaper one.
Thanks again for your help and advice....Leave a comment:
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Re: Samsung Changing Vertical Color Bands Lines LN46A540
When I powered up to get into the service menu, there were no bands (see pic). It seemed to be working just fine. The same thing happened yesterday, but the bands reappeared after about an hour and started changing colors again.
I did what you suggested and found the LVDS menu and figured out that part. If it happens again, I am ready to test for the main board.
In the mean time, I am going to get the number off of the TCON......Leave a comment:
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Re: Samsung Changing Vertical Color Bands Lines LN46A540
Thanks, Tom.
I will try that when I get home.
So, in your experience, a general failure of that size probably won't be due to a bad panel or maybe a TAB bonding issue?
I'm hoping that it is just the TCON. I can get a replacement here for about US$37.Leave a comment:
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Samsung Changing Vertical Color Bands Lines LN46A540
This Samsung has bands that change color. The overall banding remains the same width. Sometimes they fade in and out and the picture is fine. If you notice, the bands start from the center but do not go all the way to the left edge.
The bands show up in front of the menu on all inputs.
I tried reseating the flex cables to the TCON board. None of the caps seem to be bulging on the power supply.
Not sure if it is a failure with some TABs or a bad board somewhere. Any help would be appreciated....
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