No video after fitting new battery
I just fitted new Ifixit battery following the very lengthy Ifix procedure. On power up I hear the Mac opening chord and fans are turning but no video. I have checked and rechecked all connections and with magnification but can see no damage with the video or i/o connectors or logic board. I was ham fisted on the right hand speaker connection but cannot believe this would have any effect on video. Any ideas please?
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