Hi, and thanks in advance for any help/troubleshooting advice you can offer.
My Samsung LN46A630M1F LCD TV is displaying all input sources and the menu in a global white haze (see attachments). It looks as though someone turned the brightness all the way up, but that's not the case. I've performed both a "reset picture settings" from the regular menu and a factory reset from the service menu. The brightness persists throughout both the PATT_AfterDDR and PATT_BeforeDDR patterns in the service menu's FRCM_Option submenu. I looked at budm's Basic_LCD_TV_trouble_shooting_guide, but I'm not sure if my TV's T-CON board is dead because the picture in his guide shows the screen as all white with no visible input source, while my screen is mostly white with the input source still visible.
I verified that the LVDS cables are all securely connected. I found this video and tried alternately disconnecting the T-CON ribbon cables to see what would be displayed onscreen. Based on the results (see attachments), it seems like the LCD panel is physically capable of displaying input without the excessive whiteness/brightness, although the picture still displayed too brightly towards the left and right edges of the screen. I also disconnected the LVDS cable between the main board and the FRCM - at least I think that's what it's called - and the screen displayed all black with no apparently excessive brightness.
I'm thinking there's a problem with the T-CON board, but I don't know if I really should be arriving at that conclusion based on the evidence collected so far. Even if I'm right, I don't know if I should try to replace the entire T-CON or repair whatever is malfunctioning on it. So I'm VERY interested in hearing opinions from all you experts who have diagnosed more LCD TV problems than me! Please let me know if you have any suggestions or troubleshooting/fact-finding procedures you think I need to perform.
EDIT: An additional piece of information I originally failed to include.... I got this TV used from a friend. When I removed the rear cover for the 1st time, I noticed the metal housing that I think is supposed to be covering the T-CON was simply not there. I'm assuming its purpose would be to protect/shield the T-CON, so maybe its absence contributed to T-CON failure?
My Samsung LN46A630M1F LCD TV is displaying all input sources and the menu in a global white haze (see attachments). It looks as though someone turned the brightness all the way up, but that's not the case. I've performed both a "reset picture settings" from the regular menu and a factory reset from the service menu. The brightness persists throughout both the PATT_AfterDDR and PATT_BeforeDDR patterns in the service menu's FRCM_Option submenu. I looked at budm's Basic_LCD_TV_trouble_shooting_guide, but I'm not sure if my TV's T-CON board is dead because the picture in his guide shows the screen as all white with no visible input source, while my screen is mostly white with the input source still visible.
I verified that the LVDS cables are all securely connected. I found this video and tried alternately disconnecting the T-CON ribbon cables to see what would be displayed onscreen. Based on the results (see attachments), it seems like the LCD panel is physically capable of displaying input without the excessive whiteness/brightness, although the picture still displayed too brightly towards the left and right edges of the screen. I also disconnected the LVDS cable between the main board and the FRCM - at least I think that's what it's called - and the screen displayed all black with no apparently excessive brightness.
I'm thinking there's a problem with the T-CON board, but I don't know if I really should be arriving at that conclusion based on the evidence collected so far. Even if I'm right, I don't know if I should try to replace the entire T-CON or repair whatever is malfunctioning on it. So I'm VERY interested in hearing opinions from all you experts who have diagnosed more LCD TV problems than me! Please let me know if you have any suggestions or troubleshooting/fact-finding procedures you think I need to perform.
EDIT: An additional piece of information I originally failed to include.... I got this TV used from a friend. When I removed the rear cover for the 1st time, I noticed the metal housing that I think is supposed to be covering the T-CON was simply not there. I'm assuming its purpose would be to protect/shield the T-CON, so maybe its absence contributed to T-CON failure?
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