c/electronics-repairers

The 2002 Samsung CRT that finally needed a cap kit, 21 years in

Pulled an old 29-inch from a basement last week, picture was fine but the audio hummed like crazy, recapped the power supply and it ran quiet for the first time in 2 decades, is it worth chasing these analog boards anymore or just let them retire?

1 comments

mark_miller•20d ago

ESD mats losing their resistance after a few cleanings

I checked a 3 year old mat with a surface resistance meter last Tuesday and it read over 10^9 ohms instead of the 10^6 to 10^8 range. The label said it was conductive but the cleaning solvent we use ate through the coating. Has anyone else seen this with their mats or are we just using the wrong cleaner?

0 comments

christopher_hunt•20d ago

Rant: My $900 oscilloscope was dead on arrival, and I almost blamed the customer

Last Tuesday a guy walked into my shop in Cleveland with a Tektronix scope that wouldn't power on. I was about to quote him $400 for a new board before I checked the fuse holder, turns out the ceramic clip corroded and just needed a 30 cent replacement. Now I always test power paths first, even on expensive gear. How many times have you nearly sold a customer a repair they didn't need?

0 comments

oliviapatel•21d ago

Took me 6 years to realize I had my microscope light angled wrong

I've been doing board work since 2018 and always had the light coming straight down. Last month a guy from a repair shop in Austin stopped by my bench and asked why I was fighting shadows on every joint. He tilted the lamp to a 45 degree angle and suddenly I could actually see the solder flow into the vias. All those hours of squinting and redoing joints, and it was just a lighting thing. Anyone else have a basic setup habit that you later found out was completely backward?

0 comments

cameron_palmer•21d ago

That customer's offhand remark about my soldering iron tip changed my whole desoldering game

Last Tuesday a guy waiting on a laptop board repair glanced at my chisel tip and said 'you know those cone tips are for jewelry, right?' before I even touched his machine. I swapped to a 2mm hoof tip the next day and suddenly I'm pulling through-hole caps clean on the first pass instead of fighting with braid for 10 minutes. Anyone else get handed a random truth bomb from a non-repair person and have it actually improve their bench work?

0 comments

wright.rowan•21d ago

Flux viscosity difference between 2019 and 2025 batches

I keep a log of every rework job I do, and I noticed something odd going back through it. In 2019 I was using the same brand of no-clean flux pen I buy now, but the tackiness and spread are completely different. Old flux would hold components in place for a full minute before reflow. New stuff dries almost instantly, which is fine for tiny SMD work but a pain when I'm positioning a 48-pin QFP. I think the formula changed around 2022, but the label still says the same part number. A fellow tech in Austin told me he saw the same shift with his stock, so it's not just a bad batch. Has anyone else compared their old flux pens to new ones and noticed this? Or am I chasing a variable that doesn't matter once you hit the hot air gun?

0 comments

lucas_carr24•24d ago

One comment about my flux choice changed my whole rework process

A guy I met at a repair meetup in Cleveland watched me reball a BGA and said, "Stop using that sticky crap, it's why you're fighting bridges." Switched to a gel flux from Amtech, 183 paste, and my first board came out clean in 20 minutes. Anyone else get told their basic supplies were the actual problem?

1 comments

anna_craig•24d ago

A customer in Phoenix made me ditch my go-to solder

I used 63/37 leaded solder for every board until a customer brought in a vintage amp and told me my joints looked like cold blobs under his loupe. Switched to a thinner 0.025 inch with more flux and now I go slower on the iron tip. Has anyone else had to re-learn their solder choice after one bad review?

1 comments

the_alex•24d ago

Dropped $180 on a rework station I barely touch now

Two years back I got this fancy hot air rework station thinking it would fix every tiny solder bridge and lifted pad issue. Realistically I use it maybe once a month, mostly for removing stubborn USB connectors or when a through-hole cap refuses to cooperate. The rest of the time it sits on my bench gathering dust and taking up space that my $40 iron already handles fine. I should have just stuck with a cheap heat gun and some flux paste for the rare jobs, that would have covered 90% of what I actually do. Wasted money hurts, but the nagging thought that I could have put that $180 toward a decent microscope stings worse. Has anyone else bought a tool that sounded great but ended up just being a shelf ornament? How do you resist the urge to keep upgrading your kit?

1 comments

troymorgan•25d ago

Reflow vs reball on a 2011 MacBook GPU, which side are you on?

Got a 2011 MBP with the classic Radeon failure last Tuesday. Screen went all artifacts and then black. I reflowed it with my $30 heat gun and it worked for like 2 days, then died again at the shop. Customer asked if I could just reball it, but that's a 3 hour job for me on that chip. I charged them $180 for the reflow and told them it might not last. They're coming back tomorrow and I gotta decide if I reflow again for free or push em toward a board replacement for $350. Is reballing actually worth it on these old boards or is it the same solder joint failure under the chip? I've seen 3 reballed boards come back in 6 months. What's your failure rate looking like?

1 comments

noah_rivera57•27d ago

Walked into a repair shop in Phoenix and saw a vending machine for soldering tips

Honestly, I stopped by this small electronics repair place off the 10 to grab some flux, and they had a vending machine by the counter. Not snacks, it dispensed solder tips, tweezers, and tiny screwdrivers for $1.50 each. I thought it was a joke until I saw a guy buy a #2 Phillips bit from it mid-conversation. The owner said he got tired of people asking for spare parts while he was elbow deep in a logic board. Has anyone else seen a weird setup like this in a repair shop, or is Phoenix just built different?

2 comments

adams.taylor•1mo ago

TIL a laptop repair customer taught ME something about my own soldering iron

Had a guy come in last week with a dead power jack on his ThinkPad. I grabbed my Hakko and went to reflow it, but he stops me and says "You gonna tin that tip first?" I laughed it off but then realized he was right - I had been rushing and skipping that step for months. Checked my joints after and they were way cleaner when I actually prepped the tip properly. Anyone else ever get schooled by a customer on basic technique?

1 comments

pat_hart•1mo ago

My first logic board repair went south until I swapped my cheap soldering iron

I was working on a 2015 MacBook Air at my bench in Austin last month and kept burning pads until I borrowed a friend's Hakko station. Has anyone else seen a big jump in success rates just from upgrading your iron?

2 comments

caseyfox•1mo ago

Hit 100 board repairs last month without even noticing

I was going through my logs to update my parts inventory and realized I've done 102 board-level repairs since January. Most of them were just basic capacitor swaps or trace repairs on old LCD TVs and monitors. But hitting triple digits felt like a real milestone after struggling through my first 10 repairs that all failed. Anyone else track their repair numbers or am I just weird about keeping logs?

1 comments

andrew_sanchez94•1mo ago

That old guy who taught me how to desolder without a pump

I was working on a vintage stereo receiver last summer at a shop in Austin and this retired radio guy named Frank came in. He watched me struggle with a stuck joint for like 10 minutes then told me to just use a piece of copper braid and some flux instead of my cheap solder sucker. It worked way better than I expected, has anyone else had luck with old timer hacks like that?

1 comments

martinez.karen•1mo ago

Showerthought: That conversation with Dave from the shop down the street hit different about capacitor storage.

He told me he keeps his caps in labeled tackle boxes instead of bins, and I laughed until I tried it last Tuesday. It cut my bench cleanup time by almost 20 minutes, has anyone else found a weird storage hack that changed how you work?

2 comments

the_sean•1mo ago

Replaced a single cracked resistor on a 1980s receiver and the whole thing came back to life

I spent 2 hours tracing a dead channel on a Pioneer SX-780 and it was just a 47-ohm resistor that looked fine until I touched it and it crumbled, has anyone else had a component look good but test totally dead?

1 comments

cooper.taylor•1mo ago

That power supply brick nearly took out my whole workbench

Last Tuesday I was testing a vintage receiver and the cheap replacement power supply I grabbed from a surplus bin started smoking after 10 minutes. I yanked it quick but it melted a spot on my mat and smelled like burning plastic for two days. Has anyone else had a mystery component just fail like that out of nowhere?

1 comments

barbara_kim•1mo ago

A simple capacitor swap turned into a 4 hour nightmare

Pulled a board from a 90s amp, thought it'd be a 20 minute job. Turns out the solder pads lifted on three joints and I spent forever rebuilding traces. Anyone else find that recapping old gear always reveals hidden damage?

1 comments

sanchez.mary•1mo ago

Rant: Almost set a customer's house on fire in Phoenix last week

I was replacing a bad capacitor in an old AC unit and the thing was packed with dust and cat hair. The spark from my screwdriver lit it up like a torch, smoke filled the whole backyard. Anyone else have a repair that went from routine to disaster in 2 seconds?

1 comments

grant901•1mo ago

Rant: Took me 10 years to figure out I was cleaning flux wrong

I used to scrub boards with isopropyl alcohol and a toothbrush after soldering, thinking that was good enough. Then last month I was reworking a 20-year-old audio mixer from a local repair shop, and I noticed this white crusty residue under a chip that was causing intermittent noise. I asked the old-timer I share bench space with, and he just laughed and said stop using 70% isopropyl and switch to 91% or better yet 99%. I felt like an idiot because I'd been using the cheap drugstore stuff for a decade, and the water content in the 70% was leaving minerals behind that would eventually corrode stuff. Switched to 99% last week and a good ultrasonic cleaner with proper flux remover, and now my boards come out spotless. Anyone else have a moment where you realized you were making a basic mistake for years?

1 comments

amyb54•1mo ago

The $15 soldering iron from a pawn shop that outlasted my Weller

I picked up this random old Ungar soldering iron at a pawn shop in Dayton for $15 last year, thinking I'd use it for rough jobs. Two months later my Weller died mid-repair on a vintage receiver and this beat up thing fixed it perfectly. The tips are still available online too. Anyone else ever get lucky with a junk find like that?

2 comments

riley_bell•1mo ago

That ultrasonic cleaner I pooh-poohed for years finally earned its spot on my bench

I spent 6 months trying to resurrect a crusty old receiver board with alcohol and a toothbrush before I caved and spent $80 on a used 2-liter tank, and it stripped 15 years of gunk off in under 10 minutes with zero scrubbing-anyone else have a tool they were dead wrong about for way too long?

1 comments

miller.eva•1mo ago

I finally dropped $40 on a good desoldering gun

Been fighting with cheap solder suckers for years, last week I bit the bullet and bought a Hakko FR-301. Did a motherboard recap in half the time. Has anyone else found that one tool that just makes the job easier?

1 comments

aaron_gonzalez•1mo ago

Switched to flux pens instead of paste for SMD work

I tried one on a whim after fighting with paste bridges on a router board last Tuesday, and the difference in control is night and day. Has anyone else had good luck with these for fine pitch stuff?

2 comments