Hi All,
I was gifted a 50" Panasonic (Vestel Version) LCD, which the previous owner had disassembled and gave to me completely in parts, which had some failed backlight LED's.
I replaced the LED's and got it working, but found some issues with the picture which I have never experienced before.
Having looked on YouTube and various forums, it seems that one of the COF gate drivers has failed.
None appear overheated or physically damaged, but if the gate drivers on the left side of the panel are touched with a bare hand while the set is on, the picture disappears. The gate drivers on the right don't give an issue if touched.
The attached pictures show the issue I have; basically the picture is dark on the left side, and the data on the left side is in "slow motion", i.e. the picture remains longer on the screen than it should, giving a slow motion effect.
There are also vertical blank lines at various points and the top of the picture appears "in reverse", which is more noticeable when text is displayed.
I have read that fully removing the gate drivers from the side of the glass LCD can revive the picture, sometimes only temporarily, but that was with a Sharp TV, where the COF gate drivers were connected to the driver boards on the bottom edge of the screen.
These gate drivers are connected only to the glass screen.
Can I gauge opinion if I should remove ALL the gate drivers from the left side (viewed from the front) of the LCD to fix the issue, even if only a temporary fix?
Thanks in advance
Russ
I was gifted a 50" Panasonic (Vestel Version) LCD, which the previous owner had disassembled and gave to me completely in parts, which had some failed backlight LED's.
I replaced the LED's and got it working, but found some issues with the picture which I have never experienced before.
Having looked on YouTube and various forums, it seems that one of the COF gate drivers has failed.
None appear overheated or physically damaged, but if the gate drivers on the left side of the panel are touched with a bare hand while the set is on, the picture disappears. The gate drivers on the right don't give an issue if touched.
The attached pictures show the issue I have; basically the picture is dark on the left side, and the data on the left side is in "slow motion", i.e. the picture remains longer on the screen than it should, giving a slow motion effect.
There are also vertical blank lines at various points and the top of the picture appears "in reverse", which is more noticeable when text is displayed.
I have read that fully removing the gate drivers from the side of the glass LCD can revive the picture, sometimes only temporarily, but that was with a Sharp TV, where the COF gate drivers were connected to the driver boards on the bottom edge of the screen.
These gate drivers are connected only to the glass screen.
Can I gauge opinion if I should remove ALL the gate drivers from the left side (viewed from the front) of the LCD to fix the issue, even if only a temporary fix?
Thanks in advance
Russ
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