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March 9th, 2021 07:00
17 R4, vertical lines - localized problem
Hello,
It has been a few months since this problem first started but, patient as I am, I just lived with it. Around November and within a day of not moving/slamming/closing laptop's screen, I suddenly started having vertical lines running down the screen. I verified that this is not a software issue by plugging in to an external display. In addition, tilting the screen refreshed the lines, sometimes helped in getting rid of them but the display state was very sensitive if I accidentally kicked my desk.
Now, months later, here's my daily routine: booting up the laptop, screen immediately lighting up with vertical lines of various colors. Screen tilting doesn't do much. The problem persists for about 10-30 minutes and the flickering/lines will disappear on their own. Having applied pressure around the rim of the screen, I removed the screen's case and realized the problem is on the right side of the "Don't touch!" sticker - whatever lies underneath. Once that part is pushed or tampered with, the lines return/disappear.
I have no idea what that part's called so I am unable to articulate the problem further. Is it a video connector or something? From my searches, the video connector appears to be located on the bottom side of the adhesive, not right underneath.
I believe it's a wobbly connection, not a damaged part. Yet again, I am not sure why the problem goes away on its own after ~30 minutes. Is it perhaps due to heating that somehow helps restore the connection of whatever wires are there?
Any guidance on rectifying this issue would be appreciated.
ejn63
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March 9th, 2021 07:00
Boot into the screen diagnostics (hold the D key through powerup). Does the same fault show on the screen?
If yes (the more likely of the two possibilities), the screen needs to be replaced. It may well be that a chip on the control board behind the screen is failing, or a solder connection is not as solid as it needs to be when it's cold. In either of those cases, the only repair is a replacement screen.
If no, then you may have a cable issue or a driver issue. More likely it's a cable - which means disassembling the notebook and reseating the cable (if not a touch screen, both ends -- at the mainboard and at the screen). Check the connectors and the cable for damage or corrosion. If the damage is on the cable, it can be replaced with a non-touch system. If the damage is on the connector, it would mean a replacement screen or mainboard, depending on where the damage is located.