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The Lenovo Yoga 730-13IKB is a folding 2-in-1 laptop produced by Lenovo. It has a 13-inch touch screen and is designed for power users. The laptop can be identified by its model number, which begins with “81CT”.

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Why is my screen flashing grey/black and with lines?

I have a Lenovo Yoga 730 IKB that is intermittently going flashing black or grey. I think that it has something to do with the display cable in the hinge, but I am unsure. I have also noticed that there is a large amount of people that report this problem with this laptop. Is this something I could fix myself?

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Try connecting an external monitor to the laptop’s HDMI port and check if its’ display is OK, just to eliminate the possibility of a motherboard problem. A TV can be used as an external monitor as long as it has a HDMI input and you have a HDMI cable with the appropriate connectors to connect the two together.

Here’s a link to the service manual for the laptop.

Scroll to p.45 onwards to view the necessary pre-requisite steps and then the procedure to remove the display assembly and the hinges.

This will allow you to inspect the EDP cable connection (if it is loose perhaps) and also the cable for any damage.

If the EDP cable (video cable) is damaged on p.59 Item #5 you will find the part number for the component.

Using the part number appropriate to your particular panel type, search online using the part number only in the search term of your browser to find suppliers of the part.

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