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?
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
Announcement
Collapse
No announcement yet.
PS4 Wi-Fi chip bad joint
Collapse
X
-
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.-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.
Comment
-
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.-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.
Comment
-
Re: PS4 Wi-Fi chip bad joint
So guys I think I messed up badly. I had the occasion to try an original DS4 but nothing, the PS4 was stucked. After some soldering and desolring the WiFi module the PS4 doesn't turn on. I've tested the PSU and it's fine, how could I try to locate the error? I've checked for missing component next to the area where I applied the hot gun but nothing is missing
Comment
-
Re: PS4 Wi-Fi chip bad joint
Originally posted by sautzer View PostSo found the problem, I dissoldered a little resistor, could someone tell me what resistor is it?
Other questions:
- What's the board model number? (alternatively, what's the PS4 model number?)
- What's on the primary side in that general area?-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.
Comment
-
Re: PS4 Wi-Fi chip bad joint
Originally posted by ngth82 View PostIt's likely just a pull up or pull down resistor. Can you identify if one of the pads is connected to a power rail or ground? If so, a pull up, or a pull down resistor is likely - in which case, start with a 10kOhm resistor.
Other questions:
- What's the board model number? (alternatively, what's the PS4 model number?)
- What's on the primary side in that general area?
On another forum they says that is a 22 Ohms.
Comment
-
Re: PS4 Wi-Fi chip bad joint
If it's not connected to GND or VCC, then it's probably a series resistor - 10 to 33 Ohm seems reasonable.
I compared your top and bottom pictures and traced where it goes. Looks like a 5-6 mil wide microstrip trace from the IC (top side), to a through hole via to the bottom side, the (missing) resistor, then a via to an internal layer (no microstrip trace on the top side).
There's no datasheet for that IC either... but with the pics you provided, its a series resistor for the signal to snub out any over/undershoot caused by the driver on that IC. If you don't have a small value resistor, you can bridge it to begin with. Power it on and see if it works for testing.Last edited by ngth82; 04-08-2020, 03:53 PM.-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.
Comment
Comment