#microsoldering — Public Fediverse posts

Maybe I've already replaced a #RaspberryPi5 CPU before.

But today was the first time I replaced a Secure Boot locked CPU on a Pi 5.

And that's a whole different story - after I replaced a CPU Pi blinked a 1-2 code - "SD card overcurrent detected". Weird.

I tried to restore #EEPROM from a Micro SD - it flashed 3-2 - "SPI EEPROM is write protected".

I soldered another CPU. Same.

I replaced #RP1. Same.

Turns out it was EEPROM.

#electronicsrepair #microsoldering #electronics #raspberrypi

Damage Connector Replace 🔥👍

https://youtube.com/shorts/cqD_rVj-Nyo?is=PnT-RFk6kLfSnGwA

That's so satisfying to watch and mesmerizing at the same time. 🤯🤩
#mobilerepair #soldering #microsoldering #shortsfeed #Short #Satisfying #Video #YouTube

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

This isn’t your average classroom. Step behind the scenes of our microsoldering school, where every “oops” becomes an “aha” under the microscope. Learn more about the course at the link below.

Full blog: https://www.ifixit.com/News/109587/become-a-master-of-microsoldering-and-board-repair-with-ifixit-and-the-repair-academy-in-chattanooga
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#iFixit #RighttoRepair #Microsoldering

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

One more. This Pi got so hot it left melt marks on the enclosure 🤯. Eventually CPU died.

It was one with MXL7704-P4 PMIC so that CPU I tried to install earlier worked perfectly fine.

So indeed it seems like different CPU chips are meant to work with different PMICs.

P.S.: It amazes me how these days reballing and replacing a CPU feels like a quick and easy job - something that was unthinkable just a few months ago 🙆‍♂️.

#electronics #repair #raspberrypi #electronicsrepair #microsoldering

Guess what - found a CM4 with a dead CPU as well. Same exact chip version again. Replaced it with a seemingly good one from another donor, but don’t currently have a carrier board to test if it really works. Ordered one, but will receive it in a few weeks🤞🏻. 
#raspberrypi #CM4 #RaspberryPiCM4 #repair #electronics #bga #electronicsrepair #microsoldering

World’s Smallest Blinky, Now Even Smaller - Here at Hackaday, it’s a pretty safe bet that putting “World’s smallest” in the ti... - https://hackaday.com/2025/03/19/worlds-smallest-blinky-now-even-smaller/ #microcontrollers #microcontroller #microsoldering #attiny20 #tantalum #blinky #led

And as for swapping the RAM - I didn't actually reball this particular chip - it's not always necessary.

However today I received a new tool that helps quite a lot with reballing - I definitely recommend it.

It's a cheap thing with a magnet in the middle and a silicone mat from AliExpress, but who would have thought that it keeps any stencil in place so well - even I can reball with ease now 😃.

https://www.aliexpress.com/item/1005008146436030.html?spm=a2g0o.detail.pcDetailBottomMoreOtherSeller.20.59f8Z5C6Z5C67s&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=9c690d33-72a8-45bb-be58-cddd2ef13c6b&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:9c690d33-72a8-45bb-be58-cddd2ef13c6b,tpp_buckets:668%232846%238111%231996&pdp_npi=4%40dis%21UAH%21277.84%2194.48%21%21%2147.08%2116.01%21%40211b615317361003334954522e512d%2112000043984837635%21rec%21UA%21716940862%21XZ&utparam-url=scene%3ApcDetailBottomMoreOtherSeller%7Cquery_from%3A

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

Another one arrived a few days ago - this one had a missing memory resistor and a burned RAM chip in addition to the burned DA9091 PMIC.

Sadly even after swapping RAM and DA9091 from a healthy board it didn't come back to life either no matter what I tried. Maybe the CPU got damaged alongside the RAM when it was pressed or hit with something.

#repair #raspberrypi #raspberrypi5 #electronics #electronicsrepair #soldering #microsoldering

I wonder how do some manage to damage their Pis so much 🤔.

But I confused and actually all of this surgery DID help - one more saved Pi 🙌🏻.

#repair #raspberrypi #raspberrypi5 #electronics #electronicsrepair #soldering #microsoldering

Päivän agendalla vähän mikrojuotoksia. Laseranturin ehjäytys.

#microsoldering #dfrobot #sen0366

Does anyone know of a better way to solder in very narrow spaces? I gave this header replacement a good shot but managed some cosmetic burns.

The only thing I can think is a knife tip perhaps?

#soldering #microsoldering

And then comes the moment when I buy a microscope 🔬😂

And of course I immediately examine this board and right away can see someone's previous... hmm... repair attempt fail🤦‍♂️

Waiting for a hot air station to arrive and then maybe I'll be able to fix this hope🤞

#repair #soldering #microsoldering #electronics #asus #laptop