in_sympathy<p>New microscope polarization ring light arrived today.<br>Until now I used iFixes iL37 and it was a huge improvement over the non-polarized lights. But the picture was pretty poor in terms of color and dynamic range (check photo 1). </p><p>Today a new Mechanic LS720+ light arrived and it is way less bright than iFixes, yet more than sufficient. </p><p>However it provides a much better picture quality and I can see marking on the chips I simply could not before (photo 2) </p><p><a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/soldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>soldering</span></a></p>
techhub.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
A hub primarily for passionate technologists, but everyone is welcome
Administered by:
Server stats:
4.6Kactive users
techhub.social: About · Status · Profiles directory · Privacy policy
Mastodon: About · Get the app · Keyboard shortcuts · View source code · v4.4.2
#ElectronicsRepair
2 posts · 2 participants · 0 posts today
in_sympathy<p>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 the is important, so had to repair it with 0.02mm wire. I still can't believe it, but it works 🎉. </p><p><a href="https://mastodon.social/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPi</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/BGA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BGA</span></a> <a href="https://mastodon.social/tags/microsoldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>microsoldering</span></a> <a href="https://mastodon.social/tags/soldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>soldering</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/repair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>repair</span></a></p>
in_sympathy<p>I recently set my own record - fixed 11 <a href="https://mastodon.social/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPi</span></a> boards in 24 hours 🏆. </p><p>And while at it I tried Mechanic M35 Nano Flux.</p><p>I really like it and will be using it from now on - it is 4-6 times cheaper than flux I used while it is almost as good + it cleans much better. </p><p>No smoke. Decent BGA work. </p><p>Two suggestions:<br>1) use the thinnest needle you have to save it<br>2) use a needle cap - this flux spills all over the place </p><p><a href="https://mastodon.social/tags/soldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>soldering</span></a> <a href="https://mastodon.social/tags/bga" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bga</span></a> <a href="https://mastodon.social/tags/flux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>flux</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/repair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>repair</span></a> <a href="https://mastodon.social/tags/mechanic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mechanic</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a></p>
in_sympathy<p>Hey-hi-hello there, Orange Pi 5 Max 😊. </p><p>It had a blown PMIC (RK806-1), as you can see on the pics. </p><p>Cool fact - anyone can easily buy those chips. </p><p>Not cool fact - those Oranges are sucking the heat badly. </p><p>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. </p><p>But it's all good in the end - one more fix ✅. </p><p><a href="https://mastodon.social/tags/orangepi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>orangepi</span></a> <a href="https://mastodon.social/tags/orangepi5max" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>orangepi5max</span></a> <a href="https://mastodon.social/tags/orangepi5" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>orangepi5</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/soldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>soldering</span></a> <a href="https://mastodon.social/tags/microsoldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>microsoldering</span></a></p>
in_sympathy<p>So the parts arrived and I fixed USB-C connectivity. </p><p>But:</p><p>1) it won't boot from an SD card - won't even list it as a boot option</p><p>2) had to flash it from a host - installed Ubuntu 24.04 - not supported (thx <br><a href="https://mastodon.social/tags/Nvidia" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nvidia</span></a>) - installed 22.04 - flashed - errors with card</p><p>3) tried another card - flashed - won't list SD as a boot option</p><p>4) flashed bootloader - nothing</p><p>5) rinse and repeat for hours</p><p>But at some point it finally did boot, so I'am happy it's a fix ✅.</p><p><a href="https://mastodon.social/tags/jetsonorinnano" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jetsonorinnano</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a></p>
in_sympathy<p>Another "not an easy pizza", as Sorin would say 😂. </p><p>It all started with a missing part and a missing pad. Fixed. </p><p>Then I got "SDRAM Failure" on UART (8 LED blinks). Reballed, fixed. </p><p>Nowhere near being done though 😂</p><p>...</p><p>➡️➡️➡️</p><p><a href="https://mastodon.social/tags/raspberrypi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>raspberrypi</span></a> <a href="https://mastodon.social/tags/RaspberryPi5" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPi5</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>linux</span></a> <a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/repair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>repair</span></a> <a href="https://mastodon.social/tags/soldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>soldering</span></a> <a href="https://mastodon.social/tags/bga" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bga</span></a></p>
in_sympathy<p>And while my Pis update - I'll tell you how I saved another Pi 5 today. </p><p>It arrived brand new with no shorts, all voltages present.</p><p>No missing components. </p><p>No broken or burned traces. </p><p>Nothing shows up on UART. Customer bought it like that. </p><p>So I reflowed the CPU, RAM and RP1 to be on the safe side and right after that I noticed this little prick - a 10K resistor simply got cracked in half 🤯. </p><p>Pure luck 🍀. </p><p><a href="https://mastodon.social/tags/raspberrypi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>raspberrypi</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/ifixit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ifixit</span></a></p>
in_sympathy<p>Trying to figure out which pin is actually TX and which is RX on a Pine64. And whether any of those work 😂. </p><p>Found the pins but still wasn't able to get any output over UART 🤔. </p><p><a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/pine64" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pine64</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a></p>
in_sympathy<p>I also had a Raspberry Pi 5 16 Gb that won't turn on and at first I thought it's a dead RP1, but turned out to be a dead RAM. </p><p>I tried to replace it with 8GB chip from other Pi 5 + 8K resistor, but somehow it still listed that it had 16 GB RAM and showed "SDRAM failure".</p><p>I know chip is good because I checked on a 2GB Pi 5 - worked fine.</p><p>So I wonder if there is a different firmware to prevent us from making a 16 GB Pi 5 ourselves... 🤔</p><p><a href="https://mastodon.social/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPi</span></a> <a href="https://mastodon.social/tags/RaspberryPi5" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPi5</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a></p>
5021tips<p>Le secret est d'acquérir les <a href="https://mastodon.social/tags/ujanja" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ujanja</span></a> compétences nécessaires pour travailler sur quelques <a href="https://mastodon.social/tags/ecu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecu</span></a>'s, <br>et d'utiliser cette même expérience pour résoudre des problèmes avec d'autres, <a href="https://mastodon.social/tags/hakunamatata" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hakunamatata</span></a> 🤷! </p><p>C'est très facile, n'ayez pas peur, <a href="https://mastodon.social/tags/HapaUjanjaTu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HapaUjanjaTu</span></a>👇</p><p>www.5021.tips/ujanja/ecucomponents </p><p>☝️<br>Ce n'est pas gratuit, il faut faire attention, s'instruire <a href="https://mastodon.social/tags/teachyourself" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>teachyourself</span></a> <a href="https://mastodon.social/tags/howtodoit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>howtodoit</span></a> <a href="https://mastodon.social/tags/ecurepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecurepair</span></a> <a href="https://mastodon.social/tags/ecurepairs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecurepairs</span></a> <a href="https://mastodon.social/tags/repairtips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>repairtips</span></a> <a href="https://mastodon.social/tags/5021tips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>5021tips</span></a> <a href="https://mastodon.social/tags/ElectronicsRepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectronicsRepair</span></a> <a href="https://mastodon.social/tags/diytips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>diytips</span></a> <a href="https://mastodon.social/tags/ECUProgramming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ECUProgramming</span></a> <a href="https://mastodon.social/tags/autoprogramming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>autoprogramming</span></a> <a href="https://mastodon.social/tags/autoelectronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>autoelectronics</span></a></p>
in_sympathy<p>Hi, <a href="https://mastodon.social/tags/fediverse" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fediverse</span></a>. Let's try to get <a href="https://mastodon.social/tags/fedihelp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fedihelp</span></a> with <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> and <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a>. </p><p>I need to figure the marked component on an Nvidia Jetson Orin Nano carrier board (model P3766) because it has blown up. </p><p>If you can - please tell me what marking is there or what that component actually is. It had something like TT written on it - that's all I could see.</p><p>Thanks a lot! (boosting is appreciated as well 🙏)</p><p><a href="https://mastodon.social/tags/nvidia" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nvidia</span></a> <a href="https://mastodon.social/tags/jetsonorin" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jetsonorin</span></a> <a href="https://mastodon.social/tags/jetsonnano" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jetsonnano</span></a> <a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/jetsonorinnano" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jetsonorinnano</span></a> <a href="https://mastodon.social/tags/ifixit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ifixit</span></a></p>
Tog Hackerspace<p>A blown fuse, a busted speaker, some mystery wires — and one fun repair!</p><p><span class="h-card" translate="no"><a href="https://chaos.social/@tdr112" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>tdr112</span></a></span> brought a vintage CB radio setup back to life at Tog.<br>📻 Read the blog: <a href="https://www.tog.ie/2025/06/cb-radio-repair-philips-369-22ap369/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tog.ie/2025/06/cb-radio-repair</span><span class="invisible">-philips-369-22ap369/</span></a></p><p><a href="https://mastodon.ie/tags/RepairCafe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RepairCafe</span></a> <a href="https://mastodon.ie/tags/ElectronicsRepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectronicsRepair</span></a> <a href="https://mastodon.ie/tags/CBRadio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CBRadio</span></a> <a href="https://mastodon.ie/tags/Makers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Makers</span></a> <a href="https://mastodon.ie/tags/Hackerspace" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hackerspace</span></a></p>
Tog Hackerspace<p>🔧 Another day, another repair at TOG Hackerspace.</p><p>We’ve just finished upgrading an old light box used for viewing film negatives. The fluorescent tube was failing and the driver PCB was toasty... so we fixed it:</p><p>We’re all about keeping good gear running — fixing, upgrading, and keeping things out of landfill. 💚</p><p>📖 Full blog post here:<br>👉 <a href="https://www.tog.ie/2025/06/another-usb-c-upgrade/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tog.ie/2025/06/another-usb-c-u</span><span class="invisible">pgrade/</span></a></p><p><a href="https://mastodon.ie/tags/RepairCulture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RepairCulture</span></a> <a href="https://mastodon.ie/tags/RightToRepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RightToRepair</span></a> <a href="https://mastodon.ie/tags/FixDontToss" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FixDontToss</span></a> <a href="https://mastodon.ie/tags/Hackerspace" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hackerspace</span></a> <a href="https://mastodon.ie/tags/TOG" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TOG</span></a> <a href="https://mastodon.ie/tags/FilmPhotography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FilmPhotography</span></a> <a href="https://mastodon.ie/tags/SustainableTech" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SustainableTech</span></a> <a href="https://mastodon.ie/tags/ElectronicsRepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectronicsRepair</span></a></p>
5021tips<p><a href="https://mastodon.social/tags/Note" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Note</span></a> ⚠️ Whatever We pile here is not any special about <a href="https://mastodon.social/tags/ecurepairs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecurepairs</span></a>🤷! Just know <a href="https://mastodon.social/tags/HapaUjanjaTu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HapaUjanjaTu</span></a>, just to steal drinks from You🫣! </p><p>This👇 nonsense just simplifies, welcomes You to the <a href="https://mastodon.social/tags/ecurepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecurepair</span></a> game👇</p><p>www.5021.tips/ujanja/ecucomponents</p><p>👆☝️<br>Just be ready to lose your drinks to us😂😅🤣😆 with this <a href="https://mastodon.social/tags/ujanja" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ujanja</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/RepairTips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RepairTips</span></a> <a href="https://mastodon.social/tags/5021tips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>5021tips</span></a> <a href="https://mastodon.social/tags/techtipsandtricks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>techtipsandtricks</span></a> <a href="https://mastodon.social/tags/techtips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>techtips</span></a> <a href="https://mastodon.social/tags/umeme" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>umeme</span></a> <a href="https://mastodon.social/tags/circuittraining" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>circuittraining</span></a> <a href="https://mastodon.social/tags/electroniccomponents" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electroniccomponents</span></a> <a href="https://mastodon.social/tags/obdtool" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>obdtool</span></a> <a href="https://mastodon.social/tags/ECUProgramming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ECUProgramming</span></a> <a href="https://mastodon.social/tags/autodiagnostics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>autodiagnostics</span></a> <a href="https://mastodon.social/tags/magari" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>magari</span></a></p>
in_sympathy<p>Hope I’ll never work on a Jetson Nano again 🤣. It all started with customer asking me to replace an SD card port that he broke. </p><p>I did. It won’t boot. I connected UART - multiple errors. I installed Ubuntu 18.04 and Nvidia JetPack - tried to flash it - multiple errors. </p><p>It ended with TWO DAYS of figuring out how to get the damn thing to work again 😬. But somehow I managed and it works good as new. </p><p>Reminded me why I sold mine 🤣. </p><p><a href="https://mastodon.social/tags/nvidiajetson" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nvidiajetson</span></a> <a href="https://mastodon.social/tags/sbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sbc</span></a> <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a></p>
5021tips<p>To understand <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a>, the <a href="https://mastodon.social/tags/ujanja" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ujanja</span></a> is to grasp the principles of <a href="https://mastodon.social/tags/electricity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricity</span></a>, as in, controlling flow of electric current to create specific functions in <a href="https://mastodon.social/tags/electronicdevices" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicdevices</span></a>🤷♂️!</p><p>www.5021.tips/ujanja/ecucomponents </p><p>Obviously <a href="https://mastodon.social/tags/HapaUjanjaTu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HapaUjanjaTu</span></a>🫣, this rubbish☝️is very useless in misunderstanding <a href="https://mastodon.social/tags/voltage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>voltage</span></a>, <a href="https://mastodon.social/tags/current" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>current</span></a>, <a href="https://mastodon.social/tags/resistance" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>resistance</span></a>, and different <a href="https://mastodon.social/tags/electroniccomponents" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electroniccomponents</span></a> <a href="https://mastodon.social/tags/resistors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>resistors</span></a> <a href="https://mastodon.social/tags/capacitors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>capacitors</span></a> <a href="https://mastodon.social/tags/transistors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>transistors</span></a> <a href="https://mastodon.social/tags/ecurepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecurepair</span></a> <a href="https://mastodon.social/tags/ecu" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecu</span></a> <a href="https://mastodon.social/tags/5021tips" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>5021tips</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/umeme" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>umeme</span></a> <a href="https://mastodon.social/tags/electricalrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electricalrepair</span></a> <a href="https://mastodon.social/tags/motherboardrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>motherboardrepair</span></a> <a href="https://mastodon.social/tags/howitworks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>howitworks</span></a></p>
in_sympathy<p>One more. This Pi got so hot it left melt marks on the enclosure 🤯. Eventually CPU died.</p><p>It was one with MXL7704-P4 PMIC so that CPU I tried to install earlier worked perfectly fine. </p><p>So indeed it seems like different CPU chips are meant to work with different PMICs. </p><p>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 🙆♂️. </p><p><a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/repair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>repair</span></a> <a href="https://mastodon.social/tags/raspberrypi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>raspberrypi</span></a> <a href="https://mastodon.social/tags/electronicsrepair" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicsrepair</span></a> <a href="https://mastodon.social/tags/microsoldering" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>microsoldering</span></a></p>
Continued thread
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
Oh well, today I bought a dead Raspberry Pi 4B 8GB for repair.
I checked 3V3 at the post office and found low resistance - surely a dead PMIC I thought and was too lazy to check the coils around it. Turned out to be a dead CPU.
At first I got a bit upset, but then I remembered that I wanted to try replacing a CPU on a Pi for a while.
So I did. Turns out it's not that big of a deal. Though I did it twice - here's why... —>
Since I repair single board computer every now and again I used #ChatGPT to create a small testing bash script.
It does the following:
- full system update & full-upgrade
- install fastfetch & stress-ng
- run a 5 min CPU burn-in
- perform a 30 min ping test with 10 s intervals
- capture a system snapshot via fastfetch
- save logs for each command
Give it a try 
https://github.com/in-sympathy/SBC_Test.git
GitHubGitHub - in-sympathy/SBC_TestContribute to in-sympathy/SBC_Test development by creating an account on GitHub.
TrendingLive feeds
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.
Create accountLoginDrag & drop to upload