Electronics > Repair
Raspberry PI4 repair
(1/1)
Aurgelme:
Hi,
This is my first attempt at repairing a pcb with surface components, and I thought that 3 defective pi4s I had lying around were a good start.

After buying a cheap infrared heater and hot air station, and many youtube videos, I got started.

Took a chance to buy some ic chips from aliexp and orginal DA9090 from pihut.
Have now repaired 2 of the pi's, since only the power manager da9090 was defective.

The last one was not completely healthy after 12V input :) but after soldering in a new DA9090 it booted up, but USB, eth and wifi/bluetooth were missing.

Replaced the VL805-Q6 usb controller and BCM54213P eth controller, and now have both usb and wired network.

Then there was wifi/bluetooth, which was a disaster, since the wifi ic dropped from the wacum tweezers and made a mess of some of the components left of this chip.

I have searched everywhere for component locations, but have not been able to find any info, or pictures since they are located under the metal cover..

Does anyone have a diagram or photo of this part on the pi4 pcb?

Navigation
Message Index
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod