Clearly the cable is damaged and if you tried using it you could have damaged things within the logic board. So you’ll need to make the effort to replace the display cable. You should be able to replace the cable from the bottom its tricky, but doable!
Here’s a view of the displays construct [guide|9493]
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After removing the display assembly following this guide: [guide|17045] Reviewing the teardown you’ll need to carefully remove the antenna unit per Step 5.
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After removing the display assembly following this guide: [guide|17045] Reviewing the teardown you’ll need to carefully remove the antenna unit per Step 5. And here’s the needed part [https://www.thebookyard.com/product.php?cPath=39_368_349&products_id=13708|13"/15" MacBook Pro Hinge Left - LVDS Cable]
Given the systems age you may need a new battery which can explain some of your issue [guide|90275]
You do have a bit of a dilemma!
Clearly the cable is damaged and if you tried using it you could have damaged things within the logic board. So you’ll need to make the effort to replace the display cable. You should be able to replace the cable from the bottom its tricky, but doable!
Here’s a view of the displays construct [guide|9493]
After removing the display assembly following this guide: [guide|17045] Reviewing the teardown you’ll need to carefully remove the antenna unit per Step 5.
Given the systems age you may need a new battery which can explain some of your issue [guide|90275]