I’m having some distress I just place a diy projector together. The only problem is that they question to place the tv upside down. But when I turn it upside down the picture goes green. Please Help Im trying to fix it for my small outside theater.

I don’t want to spend more than $100 for a screen and am only looking for a screen 60-80″.
I have read online about goo systems, but I live in an apartment and don’t want my landlord to freak out.
I see alot of manual screens for less than 100, and read reviews where a diy type of frame expenditure more.
Will I get descent results with a manual screen versus a diy type of thing? I despise costs the time and money to try and build a screen that is no surpass or maybe worse than a budget already built screen.

Cheap way of having a cinema in you room! without shelling out hundreds of pounds!!!