Bad red artifacting all over the screen

In my experience that can be caused by the HDMI port, or one of the EMI filters between the port and the retimer. If a different cable or display doesn't fix the issue, check to see if the port feels loose at all, or if there's any visible damage inside the port. If not, it might be an issue with one of those filters. If you have soldering experience, they are a fairly easy repair, but I'd recommend taking it to a repair shop that offers component level repair if you don't have the equipment/experience for it.

由 Michael Preston 完成的 2022年6月4日

okay so i took it all apart and fiddled around with the port and its not loose at all, i have a hot air station and everything so im gonna try and take a crack at fixing it, where do i start?

由 John Dragonette 完成的 2022年6月5日

@thattechman so it showed red on another display as well and replacing the HDMI cables?

由 oldturkey03 完成的 2022年6月5日

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@thattechman have you tried a different display? Also, try a different HDMI cable. — oldturkey03
ill try that when i get home and ill let you know what happens — John Dragonette
In my experience that can be caused by the HDMI port, or one of the EMI filters between the port and the retimer. If a different cable or display doesn't fix the issue, check to see if the port feels loose at all, or if there's any visible damage inside the port. If not, it might be an issue with one of those filters. If you have soldering experience, they are a fairly easy repair, but I'd recommend taking it to a repair shop that offers component level repair if you don't have the equipment/experience for it. — Michael Preston
okay so i took it all apart and fiddled around with the port and its not loose at all, i have a hot air station and everything so im gonna try and take a crack at fixing it, where do i start? — John Dragonette
@thattechman so it showed red on another display as well and replacing the HDMI cables? — oldturkey03