원문 게시자: Dan ,
@shadyahmed - Sorry guy your issue is a bad display! Not a logic board issue. The bars are caused by a broken LCD screen. In fact, I think I can see the point of contact and a crack in the right midpoint. Did the system fall over or something thrown at it? Or did it get shipped to you and got damaged then? Here’s the IFIXIT guide you’ll need to follow: [guide|15837] and here’s the needed part: [https://www.thebookyard.com/product.php?cPath=34_165_345&products_id=19981|TheBookYard UK - iMac 21.5" LCD Panel & Front Glass Assembly - Grade-C, Apple P/N 661-7109] and you’ll need this toolkit and tapes [product|IF173-005] Make sure you follow the IFIXIT guide don’t jump ahead as the process of taking off the display as you don’t want fragments falling off.