Replaced screen now main microphone won't work, what part to replace? - Xperia Z1 Q&A, Help & Troubleshooting

Microphone 2 works (the one which is alive when using loudspeaker mode) but not the main one.
I was gonna replace it but when searching for parts there are two things that can be replaced, one is the main flexcable/microphone assembly and the other is the small flexcable on top of the motherboard
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Is there a way of figuring out what is broken? I can't see any visually broken things.....

Or wait, maybe I'm dumb. The smaller of the two is the nr2 microphone assembly? So I need to replace the big cable assembly?

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I'm talking about this part
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nope. that raised white plastic is part of the plastic/metal frame. (tried replacing mine as well)

Vibrator is out after blow

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Photos:
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Edit: I fixed it. I used adhesive tape and adhesive notes bended. (for apply pressure) .

Replace S5 active charging port, difference between G870A and G870F?

I'm about to replace the port to hopefully get my mic working again, but when I should install it I noticed that one of the connectors is missing on the A board. And the F-board is nowhere to find. Anybody knows what this connector is for, I'll guess it's for an antenna for a different band?
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Ok, I just transplanted the circuit from the old F-board over, and everything seems to work ok, and the mic is working again!

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Hey,
My friend's Mi5 started doing this weird thing (cannot post a link for the video). It displays random vertical and horizontal stripes and has the touchscreen unresponsive. Can it possibly be a screen fault, or is it a motherboard fault?
I suspect it could be the multiplexer chip in the screen assembly, but why doesn't the touchscreen work?
Has anyone seen anything like this? By the way, cleaning the display connector did not change anything.
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Thank you!

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