c/electronics-repairers

Showerthought: Is it ever okay to use a donor board from a different model if it's the only part you can find?

Honestly, I had a 2021 Samsung tablet with a fried charging IC, and after searching for 3 weeks, the only replacement I could source was from a 2020 model with a slightly different layout, so I did the swap and it's been working fine for 6 months, but I'm still nervous about long-term reliability.

Pro tip: My buddy in Phoenix said 'you're not fixing a board, you're fixing a customer's trust' after I botched a simple PS5 HDMI port job last month.

That line hit different because I was so focused on the micro-soldering I forgot the whole point of the repair was to get their console back reliably, so what's your best method for managing customer expectations on tricky fixes?

I finally looked up how many phones get thrown away each year and the number is insane

I was reading a report from the EPA website yesterday. It said over 150 MILLION cell phones are tossed in the trash every single year in the US alone. That's like, half a million phones a day ending up in landfills. It hit me that every single one of those is a repair we probably could have done. Has anyone else tried to push more repair options in their local area to fight this?

I used to skip cleaning flux off old boards until a repair came back

A customer brought back a 1980s stereo amp I fixed six months ago, saying the left channel was cutting out again. I opened it up and found the old flux residue had turned conductive and was causing a short. Now I always use 99% isopropyl and a soft brush on every board, even if it takes an extra ten minutes. Has anyone else had a comeback because of leftover flux?

That week in March where every single job was a water-damaged phone

Fixed seven of them back to back, and the last one was a Pixel 8 that the owner dropped in a saltwater tide pool. Anyone have a go-to method for salt corrosion that actually works?

Finally got a proper hot air station and it's a total game changer for SMD work

For years I was using a cheap $40 rework gun from Harbor Freight, which was fine for big stuff but I'd always burn a pad or two on small QFN chips. Last month I finally invested in a Quick 861DW station, and the difference is night and day. The precise temp control and steady airflow let me pull a 48-pin chip from a Nintendo Switch board on my first try without any damage. What's your go-to tool that you waited too long to buy?

Can we talk about how we used to just reflow everything with a heat gun back in the day?

I tried that on a 2018 MacBook Pro board last week and ended up with a $50 capacitor launched clear across my garage, teaching me that modern BGA chips really need a proper preheat stage.

Tried a different way to clean flux off a board and it went wrong

I was fixing a game console from 2015 and used a mix of 70% isopropyl and a drop of dish soap instead of my usual 99% stuff. The soap left a weird film that made the board look cloudy and messed up a trace reading. Has anyone else had a bad result from adding soap to their cleaning mix?

Just fixed my 100th broken Nintendo Switch joy-con drift issue this year. That number hit me.

PSA: I was wrong about using hot air on those tiny ribbon cable connectors

For years I used a regular soldering iron to fix laptop screen connectors, thinking hot air was too risky. Last week I had a Lenovo Yoga with a 0.4mm pitch ZIF connector that just wouldn't seat right with my old method. Switched to a cheap 858D hot air station at 280C with low airflow and it went on perfectly first try. Anyone have a go-to temp for these super small flex cables?

Just logged my 500th 'no power' repair and realized they're almost all the same three things

I was updating my service log last night and the counter hit 500 for that specific issue. It's crazy how 90% of them just boil down to a bad power supply, a blown fuse, or a loose DC jack. What's your go-to first check when a device has zero signs of life?

Finally fixed my 50th stubborn Nintendo Switch with a bad M92T36 chip

I thought that board was a total loss, but a reflow with some good flux and a hot air station at 350 degrees brought it back to life, which felt amazing after two failed attempts last month.

My old boss swore by using a heat gun for every single SMD rework job.

He said a hot air station was a waste of money for a small shop. I finally bought a proper station six months ago and my success rate on those tiny 0201 components went from about 50% to near perfect. Was he just stuck in his ways, or is there still a good case for the heat gun method on a budget?

The week my shop turned into a museum for cursed electronics

So last week, this older guy walks in with a huge cardboard box, says he cleaned out his attic and wants me to 'look at a few things'. I open it up and it's like a time capsule of tech fails. There's a VCR with a melted tape still inside, a cordless phone that looks like it survived a flood, and a CRT monitor with a screen so burned-in you can still see the Windows 95 start menu. The kicker was a 'smart' toaster from like 2010 that had a tiny LCD screen for... sending texts? He seriously thought I could fix them all for about fifty bucks total. I spent three days just trying to explain why bringing a 30-pound tube TV back to life isn't worth it. Has anyone else had a customer bring in a pile of stuff that's just too far gone to even laugh at?

TIL that ultrasonic cleaners aren't just a gimmick for watchmakers

I always thought they were a niche tool for jewelry, but after cleaning a crusty laptop fan assembly in my iSonic P4820 for 8 minutes, it came out looking brand new. The amount of caked dust and grime that just fell away convinced me. Has anyone else found a surprising use for one in a repair shop?

Question about a repair shop I saw in Chicago

I walked past a small repair place on Clark Street yesterday and noticed they had a whole shelf of old, gutted VCRs for parts. It got me thinking, do you guys still keep specific old parts like that around, or do you just tell customers it's not worth fixing? What's your cutoff for keeping obsolete stuff?

Why does nobody talk about using a drop of super glue to fix a cracked solder mask on a board?

I had a client's 2015 Pioneer receiver with a hairline crack near a mounting hole, and a tiny bead of thin super glue wicked right in and stopped the crack from spreading for good.

Saw a repair shop in Austin using a $20 hot air station on a MacBook logic board

One side says it's a total hack job that'll damage the board, the other says it gets the job done for simple reflows. What's your take on cheap tools for serious repairs?

Changed my mind about using canned air on a tricky laptop fan

I spent about four hours trying to fix a noisy fan on a Dell XPS 13, convinced a good blast of canned air would clear it. Turns out the bearing was shot and the air just pushed a bunch of dust deeper into the heatsink, making the thermal paste job I had to do next way messier. What's your go-to method for diagnosing a bad fan versus just a dirty one?

Appreciation post: Saw a fully functional 1980s Zenith TV in a thrift store in Boise last week.

It made me miss when you could actually fix a set with a schematic and a soldering iron instead of just swapping a sealed board.

Vent: I fixed a dead 2016 Dell laptop by baking the motherboard, which feels totally wrong but it worked

The thing had a classic GPU failure, no display at all. A customer brought it in and said they had nothing to lose. I was out of reflow stations, so as a last resort I followed an old forum guide: wrapped the board in foil, left the CPU and RAM shielded, and baked it at 385 degrees for exactly 8 minutes. Let it cool for an hour, reassembled, and it booted right up. Part of me knows this is a temporary hack, but the laptop's been running fine for three weeks now. Do you guys ever use these 'last ditch' methods, or is it always better to refuse the job and stick to proper tools?

A 2018 MacBook Pro board repair just ate my entire Saturday

Had a clean looking A1989 come in with no power, thought it was just a simple short on the main rail. Three hours in with the hot air station, I found a tiny capacitor under the CPU that was cracked and leaking. The whole board flexed when I tried to remove it, and now I have a new dead short somewhere else. Anyone have a good source for these newer board schematics that doesn't cost a fortune?

Finally got a stubborn PS5 HDMI port to take solder after three tries

I was debating between using more flux or switching to a lower temp iron. Went with the lower temp, 315 degrees Celsius, and it worked perfectly on the fourth tiny ball of solder. Anyone have a go-to temp for those finicky modern HDMI pads?

I swapped my old $20 soldering iron for a Pinecil V2 and wow, the difference is huge

For years I used this basic plug-in iron from the hardware store. It worked, but it was slow to heat up and the tip would get crusty fast. Last month I got a Pinecil V2, which is a small USB-C iron. It heats from cold to 700 degrees in about 10 seconds, and the temperature control is rock solid. I was fixing a Nintendo Switch power chip, and being able to quickly switch between a fine point for small pads and a bigger tip for ground planes without waiting minutes made the whole job smoother. The old iron just couldn't keep up with modern, heat-sensitive boards. Has anyone else made a similar jump to a better iron and found it changed how you tackle repairs?

A blown fuse on a 1980s Pioneer receiver taught me a quick trick

I was fixing a Pioneer SX-780 in my garage when it wouldn't power on after a recap. I spent an hour checking my solder work before I finally pulled the main fuse. It looked fine, but when I tested it with my multimeter, it read open. The glass hadn't blown, but the filament inside was broken. Now I always meter fuses first, even if they look good. What's your go-to first check on a dead unit?