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Old 03-25-2020, 07:08 AM   #1
sautzer
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Default PS4 Wi-Fi chip bad joint

First off, English isn't my primary language so I don't know all the technical terminology. So I ended up owning this PS4 slim that had a problem pairing controller. Once opened, I removed the WiFi chip and some joint ended up like in photo (I don't know the technical terms, if you could tell me how it's called I'll appreciate). How can I fix this?
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Old 03-25-2020, 01:21 PM   #2
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Default Re: PS4 Wi-Fi chip bad joint

oh shit!

you need to rebuild the pads - watch some luis rossmann video's on utube.
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Old 03-25-2020, 05:39 PM   #3
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Default Re: PS4 Wi-Fi chip bad joint

"Cratered BGA Pad" is something you can look up on Google for some info. I second looking at Luis Rossmann on YouTube on repairs.
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Old 03-26-2020, 12:14 AM   #4
sautzer
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Default Re: PS4 Wi-Fi chip bad joint

Thanks you guys! Really appreciate your support, hopefully the next reply will be for telling you I succeed
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Old 03-27-2020, 12:58 AM   #5
sautzer
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Default Re: PS4 Wi-Fi chip bad joint

Sorry guys, I've seen many videos from Louis but didn't found one with a similar problem to mine, could you link one please?
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Old 03-27-2020, 09:52 AM   #6
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Default Re: PS4 Wi-Fi chip bad joint

The general idea would be to:

1) Identify where the electrical net would go to.
2) Identify where you can jumper something to that BGA ball.


In your case: The red box looks like it's a signal pad that is connected to the via immediately to the left. You can scrape off the green solder mask from the via and add a 'jumper' wire (really thin wire -- 32 AWG (8 mil) or smaller wire for the red box.

The purple boxes appear to be connected to GND. You may be able to scrape off the green solder mask around it and get a copper foil sheet and tack it down "outside" of the BGA region.
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