I would inspect the ribbon cable for damage as well as double check the ZIF connector interface. Is the ribbon fully inserted and squarely? Did you flip the latch back down so the connection is firm? Did you damage the connector?
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While you noted you inspected the cable could you have missed the damage?
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I would inspect the ribbon cable again for damage as well as double check the ZIF connector interface. Is the ribbon fully inserted and squarely? Did you flip the latch back down so the connection is firm? Did you damage the connector?
How about posting some clear images of the ribbon and the connector here so we can see things as well.
I would inspect the ribbon cable for damage as well as double check the ZIF connector interface. Is the ribbon fully inserted and squarely? Did you flip the latch back down so the connection is firm? Did you damage the connector?
How about posting some clear images of the ribbon and the connector here so we can see things as well.