problem RED back lcd color>>>>
I changed (lvds) and lcd screen but the problem remained
I changed (lvds) and lcd screen but the problem remained
Attached Files
-
Last edited by salmanzeiad; 09-12-2021, 08:06 AM. -
Re: lenovo g580 red back lcd
I once faced such an issue with dell n5010 mb. Ultimately, had to replace the pch to solve it. may not be the case here. -
-
Re: lenovo g580 red back lcd
Check lvds socket on main board, maybe you have bent pins?A working TV? How boring!Originally posted by PeteS in CAComment
-
Re: lenovo g580 red back lcd
Looks like an incompatible panel?Last edited by SMDFlea; 09-17-2021, 11:24 AM.Comment
-
Re: lenovo g580 red back lcd
Picture on external monitor is OK ?Comment
-
Comment
-
Comment
-
Re: lenovo g580 red back lcd
Did a quick search and the LCD Panel model seems compatible.
Image on external screen through VGA connector is OK? (I know you tested external screen but do not know if HDMI or other output)Last edited by electrocute; 09-20-2021, 08:05 AM.Comment
-
Re: lenovo g580 red back lcd
Probably nothing will change. Was curious about it as the colors are clearly divided on the VGA and though that maybe they were shorted on the PCH, but this is probably a misconception on my part due to my limited knowledge on the subject.
If the screen panel, the LVDS connector and the cable are good then I'd rather think it is the PCH.
If I'm not mistaken the color behavior can be related to the LVDS data signals:
LVDS_A0#
LVDS_A1#
LVDS_A2#
LVDS_A0
LVDS_A1
LVDS_A2
Some measurements can be done on them (pin 13 to 18, on the LVDS connector on the board) with a multi-meter on diode mode to measure resistance to ground, and with and oscilloscope to read and compare the positive/negative signals of the three data line pairs: a significant difference on a data line could indicate a problem. As they connect directly to the PCH that's probably the culprit.
Some more seasoned members could have a better explanation for it and correct me where I am wrong. Learning is a long journey.Attached FilesLast edited by electrocute; 09-21-2021, 05:29 PM.Comment
-
-
Lenovo IdeaPad G480 G580 Laptop Boardview
WISTRON LG4858L G48,G58 UMA 12206-SA... -
-
Lenovo 3000 Series Schematic
Lenovo 3000 was a line of low-priced notebook and desktop computers designed by Lenovo Group targeting small businesses and individuals. It was replaced with the IdeaCentre and IdeaPad brands.
3000 C100 laptop with Braille keyboard
Lenovo 3000 C
C100, C200 - 15-inch XGA screen
Lenovo 3000 N
N100, N200 - 14.1-inch- and 15.4-inch- WXGA models
N500 - 15.4 inch screen.
Lenovo 3000 V
V100, V200 - 12.1-inch WXGA models
Lenovo 3000 G
G400, G410, G430, G450, G455, G510, G530, G550, and G560...10-04-2024, 06:05 AM -
This specification for the Lenovo IdeaPad 120S Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 120S boardview and 120S schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo IdeaPad 120S...09-06-2024, 06:40 AM
-
This specification for the Lenovo IdeaPad 320 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 320 boardview and 320 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo IdeaPad 320...09-06-2024, 06:06 AM
Comment