Home Forums Digital Home & Smartphones Help Viewsonic PA503S Projector horizontal red lines Tech Helproom | Windows Help | Apple Help | Digital Home & Smartphones Help | Consumer Rights Advice | Games | Speakers Corner | Beta Testing Forum Rules | Contact Forum Editor | Report a Post Viewsonic PA503S Projector horizontal red lines Matthew Ball 14:00 01 Dec 2019 Locked Viewsonic PA503S Projector has large horizontal red lines. There are 4 of them and they evenly divide the screen. Ugh! What do they mean? How do I get rid of them? (Issue is not mentioned in troubleshooting area of manual.) Fruit Bat /\0/\ 21:15 03 Dec 2019 what cable are you using? check your connection is good. Matthew Ball 04:45 04 Dec 2019 35ft 4k HDMI. I'll check the cable. That will not be fun to replace since it goes through two walls and over the ceiling :( Hopefully it's not the cable. The specs are here: click here This thread is now locked and can not be replied to.