Hello, I would like to suggest to you to get another ribbon for your entire top case cover. Chances are that there is a "BREAK" somewhere within that ribbon cable (most likely right at the connector head). These type of cables can only stand so much bending, if you keep bending it up (as in removing the top case cover a lot) you can cause a break at critical points on that cable. You can go to EBAY and purchase a use one for a minimal price since it is not a highly sought after item.
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Hi, you can obtain that ribbon cable on ebay, the cost will not be that much at all since it's not a "HIGH" selling item but you will find some there. Now in "jumping" that cable to see if it is shorted, well I would not attempt to do that due to the possibility of creating another problem elsewhere in that electrical circuit. It's worth the wait.
Hello, I would like to suggest to you to get another ribbon for your entire top case cover. Chances are that there is a "BREAK" somewhere within that ribbon cable (most likely right at the connector head). These type of cables can only stand so much bending, if you keep bending it up (as in removing the top case cover a lot) you can cause a break at critical points on that cable. You can go to EBAY and purchase a use one for a minimal price since it is not a highly sought after item.