Display flicker, no keyboard/trackpad?

Wanted to post this question here—I've had a few cases involving different A2681 where the trackpad and keyboard both become non-functional and the display continues to power off/on randomly, making it very hard to use. I've also noticed that the display flicker on the login screen seems to respond (though somewhat randomly) when you tap the power button. Is this a known issue with these models? Has anyone experienced something similar, and if so, how did you repair it? Thank you!