Weird case today in my hobby of #RaspberryPi #electronicsrepair - a dead CPU, but all major ICs are fine: DA9090, VL805, FPF1320UCX...

And there's more: CPU was shorted on a 1V8 rail 🤔.

So a note to self on reballing and replacing similar ICs: use airflow around 40%, don't put a hot air nozzle on and don't underestimate hot air rotation while heating the stencil and the chip. You'll thank yourself later 😊.

#bga #reballing #soldering #ifixit #repair #microsoldering #electronics

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Got a Pi 4B with a torn CPU the other day. Removed the lead free solder residue and discovered that a few pads were torn. One of them is important, so had to repair it with 0.02mm wire. I still can't believe it, but it works 🎉.

#RaspberryPi #electronicsrepair #sbc #BGA #microsoldering #soldering #electronics #repair

Hey-hi-hello there, Orange Pi 5 Max 😊.

It had a blown PMIC (RK806-1), as you can see on the pics.

Cool fact - anyone can easily buy those chips.

Not cool fact - those Oranges are sucking the heat badly.

So I had to put it on the preheater to replace the chip, because hot air alone either won't provide enough heat or would burn the board.

But it's all good in the end - one more fix ✅.

#orangepi #orangepi5max #orangepi5 #electronics #sbc #electronicsrepair #soldering #microsoldering