Member Avatar for Abraham.Ka

Hello!

When I power on my laptop (Fujitsu Siemens Amilo Pa) the screen turns grey and after a couple of seconds vertical lines of random color start to appear all over the screen. They change their color constantly. External monitor works just fine (through VGA connection).

I disassembled the laptop and checked the data cable that connects LCD and motherboard. I checked every single wire in the cable (rungup with my multimeter) and the cable is absolutely fine (I made a simple pinout schematics). Cable has a sticker: PTT50 LCD CABLE ONE, P/N: 22-12-023-70, CNJS: 2008 (some chinese? characters).

Photo of LCD with lines is in the attachment.

Will greatly appreciate any help!

IMG_0846.JPG 109.45 KB
Edited by Abraham.Ka
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Dani AI

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Agree with that this is almost certainly hardware, and with that the panel may ultimately need replacing. Since already checked continuity on the cable, focus next on diagnostics that catch intermittent or panel-side faults (those often won't show on a static multimeter check).

  • Verify when the stripes appear (during POST/BIOS vs only after OS loads). If they show before any driver/OS activity, the problem is in the display assembly (cable, T-CON, or panel), not the GPU.
  • Do a hinge/“wiggle” test while the machine is on and displaying the stripes. If the pattern changes when you move the lid, suspect the LVDS/eDP cable or its strain area near the hinge. Static continuity can miss hairline breaks; flexing often reveals them.
  • Power down, remove battery/AC and carefully reseat both ends of the display cable (motherboard and the flat-ribbon at the LCD). Inspect for bent pins, corrosion, torn shielding, or damaged tape behind the hinge — common failure points.
  • Inspect the LCD’s T-CON board (small PCB at the panel edge) for burned components or loose ribbon connectors. Vertical, color-changing stripes are frequently T-CON or panel column-driver failures; horizontal bands or intermittent issues are more often cable/connector related.
  • Replace the LVDS/eDP cable first (cheapest and most likely fix if wiggle testing alters the artifact). If a replacement cable doesn’t help, the T-CON or the panel itself is the next candidate.

Safety note: always unplug AC and remove the battery before probing connectors; if the panel uses CCFL backlight, avoid touching the inverter and cabling. If you’re not comfortable with disassembly, a local repair shop can test a spare cable/panel quickly.

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Member Avatar for johhny-marshal

The problem seems like hardware related. You need to take a hardware check up for the Laptop.

Member Avatar for beholdafrica

i think your screen need replacement!

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