Dear Forum Members,
I have got a Dell Inspiron 5520 laptop that works fine except for its display.
During every 4-second internal, the followings happen:
Then, all of these are repeated for the next 4 seconds too and so forth.
The backlight is fixed at its position. It does not move. The problem is the same in Bios and in Windows with/without HDD. The jumping display is not distorted or bad except for the rows on the first 3 millimeters. The display is OK without jumping on external monitor.
I do not have another Screen/Cable to test. the laptop does not have a dedicated Graphics chip.
What do you think is defective: Screen, LVDS Cable, Bios, or Mainboard?
Why do the rows on the first 3 millimeters of the display disappear regularly at a constant frequency?
Thanks
I have got a Dell Inspiron 5520 laptop that works fine except for its display.
During every 4-second internal, the followings happen:
- At the start of the first 2-second sub-interval, the display immediately moves up by 3 millimeters. This move is due to the fact that the rows on the first 3 millimeters of the display disappear so that the other rows of the display move up. I illustrated this in the attached video.
- Then, the display stays at that position during the first 2-second sub-interval.
- At the start of the second 2-second sub-interval, the display immediately moves down to its original position. This move is due to the fact that the rows on the first 3 millimeters of the display appear again.
- Then, the display stays at that position during the second 2-second sub-interval.
- Then, the display stays at that position during the first 2-second sub-interval.
- At the start of the second 2-second sub-interval, the display immediately moves down to its original position. This move is due to the fact that the rows on the first 3 millimeters of the display appear again.
- Then, the display stays at that position during the second 2-second sub-interval.
Then, all of these are repeated for the next 4 seconds too and so forth.
The backlight is fixed at its position. It does not move. The problem is the same in Bios and in Windows with/without HDD. The jumping display is not distorted or bad except for the rows on the first 3 millimeters. The display is OK without jumping on external monitor.
I do not have another Screen/Cable to test. the laptop does not have a dedicated Graphics chip.
What do you think is defective: Screen, LVDS Cable, Bios, or Mainboard?
Why do the rows on the first 3 millimeters of the display disappear regularly at a constant frequency?
Thanks
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