Thanks for your answer. Sorry if I wasn’t clear I mean I’ve tried a separate device on the monitor and it works fine. I use a MacBook for work and this displays correctly on the monitor without any issueHey there — based on your description, the issue likely isn’t with your Raspberry Pi 500 itself. Since you’ve already tested with a different HDMI cable, power supply, and even confirmed another device shows the same problem on that monitor, the display is probably the culprit.
Here’s what you can try to narrow it down further:
Test the Pi on another monitor or TV — if the lines disappear, that confirms your monitor has a fault.
Check HDMI ports on both the Pi and monitor for any bent pins or dust.
Try a different HDMI input (if your monitor has more than one).
Inspect your monitor’s on-screen menu — if the colored lines appear even when the Pi isn’t connected, it’s a hardware issue with the display panel.
If the lines persist regardless of input, it’s almost certainly a failing display panel or internal ribbon cable on the monitor. Unfortunately, that would mean repair or replacement.
Statistics: Posted by atomicshapes — Sat Oct 11, 2025 11:31 am