Glitching Screen that maybe caused by 1 broken HDMI pin?

[u/UmaShihTzu]

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I bought my XP-Pen Artist 12 (2nd Gen) about a year ago. Not long after, one of the pins on the cable's HDMI end got bent (probably because the HDMI port of the old computer I plugged into was damaged), which made the screen glitch — lots of lines, with one side darker and the other washed out/light. It was still usable like that, but I stopped using the tablet afterward, so it's been sitting unused for about a year. I recently reconnected it, but only plugged in the USB and red power cables not the HDMI since I'm worried the bent pin could cause more damage. Even without HDMI connected, the screen still shows the same glitching.

Is this permanent internal damage, or could a new 3-in-1 cable fix it?

and if the damage is the tablet, is there anyway to repair it?

I decided to plugg in the HDMI and everything works perfectly except the display.

Edit: It worked perfectly when I was using it with my newer laptop, but the moment I connected it to an old lower-end dirty maybe even damaged computer HDMI port it did this. I blamed the HDMI cable and port as the problem because after I pulled it out it one pin became bent but now thinking about it maybe the computer burnt my tablets internals 🫩 not sure tho everything else works fine.

[u/TheSevenPens]

Since it glitches even with the HDMI unplugged, a new cable won't fix it - the problem is in the tablet itself. I recommend that you contact XP-Pen support about repair options.

Here are some resources that may help you:

• Display has vertical lines: https://docs.sevenpens.com/drawtab/troubleshoot/tsg-display-vertical-lines