Macbook air a2337 part no 820-02016 wifi/bt chip is burned mark can I replace this chip will work I have same donor board
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Hello all!
Recently I've got a broken Macbook Air M1 2020 A2337 of eBay with a broken screen and not turning on issue.
After some tinkering I've found C5201 capacitor to be blown. This is where I hit a wall since I am a total noob in this area and have no idea what else to look for. C5201 is on one line with 3 more capacitors which visually seem ok, but beep on continuity mode and also both sides of all capacitors beep when tested with ground from the board. This to me sounds like a short, but I am not able to find what component is before the capacitors to test it.... -
Hi All.
I have an 820-02016 board (A2337 M1) that has come in for data recovery. Reported as liquid damage, but no visible evidence of any liquid damage.
Board was initially stuck at 5v, and current only spiking occasionally to around 400mA and cycling.
After initial troubleshooting, found that C7800 (which feeds the power rail PP5V_BSTLQ_VOUT_SPMU) was dead short to ground.
Replaced C7800 and short gone. Board still stuck at 5v. Current draw behaviour changed. It now spikes up for a second to around 100mA to 130mA, then drops down to... -
Hello, on this laptop, the wifi can be up and stop working. I noticed it never works without battery, except long time after I remove the DC jack, and it stop to works (Bluetooth too). It diseapper to window and still 2 exclamation points in the device list.
The wifi chip is hot when the laptop is on.
I made a bios update but the same.
That could be a thermal issue, I measured 2 caps shorted (0 Ohms) beside the chip (+3V_WLAN according the bordview), but not since (so I have doubt what I saw). After, I measured 50 Ohms when battery plugged and K Ohms... -
Hi everyone,
I'm working on a MacBook Air 2020 (A2337, board 820-02016) and running into a strange USB-C issue. I've gone through quite a bit of testing and part replacement, but I'm stuck — hoping someone here can shed some light.
🛠 Original Issue
The machine initially wouldn't negotiate 20V over USB-C — stuck at 5V.
Diagnosis showed PP1V5_UPC0_LDO_CORE shorted to ground.
I replaced U3100 (UF400) using a donor board (A2179), and the machine powers on fine now.
⚠️ New Problem: One USB-C Port Only Works in One Orientation... -
Hello everyone
Small technical problem on a Nintendo Switch lite
Here's what I noticed: the USB port has been damaged internally, with a short circuit on the power supply line to the small fuse.
After replacing the USB connector, the short circuit went away and I can't see any other short circuit in the whole motherboard.
When I charge the console, it seems to be charging: I get 15 volts and an amperage of 0.450 A.
Then, after a while, the amperage increases to 1.1 A and the BQ24193 charging chip starts to heat up, as evidenced...