This looks like a cracked LCD. This is not a symptom of a bad LVDS cable.
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This looks like a cracked LCD. This is not a symptom of a bad LVDS cable. Here's the [https://www.ifixit.com/Guide/MacBook+Unibody+Model+A1342+Display+Replacement/1677|guide] on how to replace the LCD on this laptop.
Take the computer apart again and check all the cables to see if anything was damaged
If all good, contact where you bought the part and have them exchange it