Here's a suggestion: If you don't want to transfer insult from the item to the person who had it, use the word "inexpensive."
He had an inexpensive screen.
Unless there is a Hebrew word that expresses this already, "inexpensive" should be an alternate translation for זול. I reported it, saying that my answer should be correct.
I found confirmation at Morfix: https://www.morfix.co.il/inexpensive - זול was the first definition. Many thanks for any feedback to the contrary.