Question Fan at full speed and no display ?

Oct 9, 2020
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Hi. I've own a dell inspiron 5567 and its dc jack went out. So i ordered one and try to put it in my laptop myself and i successfully did, when i plug the charger in fan starts running at full speed without pushing the power button and no display shown. later again after reopening it i realise that i forget to put battery terminal in the board. So i put that in but again the same issue fan @ full speed and no display.
Any suggestions what went wrong and how to operate?
I've tried with old jack in too!
 

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