• LVDS Data signals

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 [SOLVED] LVDS Data signals

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#1 LVDS Data signals

by mohkam • 2 November 2013, 23:10
Hi,
Need comments on the following point:

I found on some laptops, with internal display fail :TXLOUT0+, TXLOUT1+, TXLOUT2+ = 0.6V to 0.9V (on LCD panel connector ).

May I consider them as normal voltages and conclude then that video LVDS signals are present on connector ?

Thank you for your help.

Re: LVDS Data signals

by Google Adsense [BOT] • 2 November 2013, 23:10

#2 Re: LVDS Data signals

by tellyman02 • 4 November 2013, 23:50
I would use a scope to view the signal the voltage is only one part of the equation. I wish you luck. :D

#3 Re: LVDS Data signals

by mohkam • 6 November 2013, 18:35
tellyman02 wrote:I would use a scope to view the signal the voltage is only one part of the equation. I wish you luck. :D


Hi tellyman02!
Thanks for your reply.
Yes, I do agree with you. I have an mtx 3352 digital oscilloscope, that I unfortunately seldom use.

Given your large experience in electronics and computers, can you advice me, professionally speaking, what are the main signals needed to be checked strictly with oscilloscope, in troubleshooting display fail of a laptop ?

#4 Re: LVDS Data signals

by mohkam • 13 November 2013, 10:50
mohkam wrote:
tellyman02 wrote:I would use a scope to view the signal the voltage is only one part of the equation. I wish you luck. :D


Hi tellyman02!
Thanks for your reply.
Yes, I do agree with you. I have an mtx 3352 digital oscilloscope, that I unfortunately seldom use.

Given your large experience in electronics and computers, can you advice me, professionally speaking, what are the main signals needed to be checked strictly with oscilloscope, in troubleshooting display fail of a laptop ?


Hi!
I would appreciate getting reply to my post from you or any other viewer to help me getting benefit of my oscilloscope in troubleshooting display fail.

#5 Re: LVDS Data signals 

by an36xa • 17 November 2013, 11:56
I examined with scope (Hantek) LVDS signals on some game slot machine monitor. Maybe that can be useful. As input i used VGA 16 gray pattern, resolution 1280x1024 @60Hz
Signals measured are from 1st pin, at 30 pin LVDS connector on LCD panel.
In the file lvds.rar are saved screenshots from scope. In first folder is screenshot for 1st pin, and others respectively.
lvds.rar




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#6 Re: LVDS Data signals

by mohkam • 17 November 2013, 17:10
an36xa wrote:I examined with scope (Hantek) LVDS signals on some game slot machine monitor. Maybe that can be useful. As input i used VGA 16 gray pattern, resolution 1280x1024 @60Hz
Signals measured are from 1st pin, at 30 pin LVDS connector on LCD panel.
In the file lvds.rar are saved screenshots from scope. In first folder is screenshot for 1st pin, and others respectively.
lvds.rar


The LVDS signals are well illustrated; Thank you "an36xa".

Re: LVDS Data signals

by Google Adsense [BOT] • 17 November 2013, 17:10
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