Hi. New here - first thread, second post.
So I go to fix this TV for a customer - a Samsung LE40C750 - beautiful machine. 3D 1080p, with all the bells and whistles. It has faint vertical coloured lines down the right hand side so I figure bad T-con or dirty contact on the ribbon cables connecting the T-con to the screen drivers. Wrong on both counts.
Then the customer shares with me that they had cleaned the screen with windolene - spraying the liquid straight onto the screen and scrubbing it vigorously with a cloth (some people shouldn't be allowed to buy TVs).
Now this model is unusual in that it has the T-con board and the screen drivers at the bottom of the TV. So I surmise that when scrubbing the screen, windolene has dripped down through the gap created when he was pressing down hard with the cloth and has somehow polluted the 'Anistropic Conductive Film' (ACF) connecting the flex foils to the LCD and screen driver board creating horizontal conduction between particles resulting in some short circuits
. These particles are about the width of a single one of those coloured lines you can see when the TV is on.
I have thought about reheating them but I don't know at what temperature is safe nor precisely how long to do that for. I really want to know if there is any way I can replace the ACF. Appreciating that it would be an extremely precise procedure that is usually achieved by carefully calibrated machines at the factory.
Has anybody ever tried this? Is it within the realm of possibility? What do you think?
So I go to fix this TV for a customer - a Samsung LE40C750 - beautiful machine. 3D 1080p, with all the bells and whistles. It has faint vertical coloured lines down the right hand side so I figure bad T-con or dirty contact on the ribbon cables connecting the T-con to the screen drivers. Wrong on both counts.
Then the customer shares with me that they had cleaned the screen with windolene - spraying the liquid straight onto the screen and scrubbing it vigorously with a cloth (some people shouldn't be allowed to buy TVs).
Now this model is unusual in that it has the T-con board and the screen drivers at the bottom of the TV. So I surmise that when scrubbing the screen, windolene has dripped down through the gap created when he was pressing down hard with the cloth and has somehow polluted the 'Anistropic Conductive Film' (ACF) connecting the flex foils to the LCD and screen driver board creating horizontal conduction between particles resulting in some short circuits
. These particles are about the width of a single one of those coloured lines you can see when the TV is on.I have thought about reheating them but I don't know at what temperature is safe nor precisely how long to do that for. I really want to know if there is any way I can replace the ACF. Appreciating that it would be an extremely precise procedure that is usually achieved by carefully calibrated machines at the factory.
Has anybody ever tried this? Is it within the realm of possibility? What do you think?
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