c/electronics-repairers

Had a convo with a customer that made me rethink my soldering approach

Guy brings in a 20 year old receiver, says he's tried fixing it himself. I'm expecting a janky mess inside, but his joints were clean. He told me he switched to a cheaper iron and takes way longer on each joint. I've been using the same hot station for years and rushing through stuff. Now I'm thinking about slowing down, maybe grabbing a backup iron for the tricky boards. Anyone else had a customer teach them a thing or two?

2 comments

hall.ruby•1mo ago

Shoutout to the guy who told me to stop using compressed air on motherboards

Ngl, I used to blast dust off boards with canned air like it was nothing. A customer brought in a dead laptop last month, and I found corrosion under a chip that looked exactly like moisture damage from air spray. Tried telling myself it wasn't that, but then I tested a spare board I cleaned the same way and got weird shorts. Switched to a soft brush and 99% isopropyl alcohol for cleaning, and after 6 boards not a single issue. Has anyone else had a board die from compressed air or am I just unlucky?

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hunt.rowan•1mo ago

Three years ago I swore by hot air rework stations. Now I barely touch mine.

I picked up a Hakko 888 for around $90 back in 2021 and used it nearly every week on old console repairs. Last month I pulled it out for a stubborn capacitor on a stereo amp, but ended up just using a soldering iron and flux instead. The hot air felt like overkill for something a decent wick and steady hand could handle. Three years ago I would have reached for the big gun first. Now I only grab it for BGA chips or heavy ground planes. Anyone else find their tool habits shifting over time like that?

2 comments

david821•1mo ago

Had a customer yesterday wave a dead multimeter in my face screaming I ruined his repair

He was convinced a good reading on my Fluke 87 meant his old corroded pins were fine, and he's now out $150 in parts because he didn't replace them. Has anyone else had a customer refuse to accept what a simple continuity test tells them?

2 comments

the_anthony•1mo ago

Had a customer swear their HDMI cable was bad. Tested it 3 times. It was their GPU port.

Guy insisted I swap out a $30 cable for a new one. I finally plugged his laptop into my test monitor and boom, no signal. He argued with me for 10 minutes before he saw the bent pins. Has anyone else had customers fight you on obvious hardware failures?

3 comments

river_hart18•1mo ago

Fixed a monitor with a dead backlight using a flashlight

Was working on a customer's 32" LCD last Tuesday and no backlight, but I could see the image at a certain angle. Ended up using an LED strip from an old laptop screen I had in the truck, 12 volt adapter, and some patience. Anyone else ever salvage parts from one thing to fix another?

2 comments

leo238•1mo ago

Unpopular opinion: Hot air rework stations are overhyped for most board repairs

I just read a study from a 2022 IPC report that said over 60% of component failures on multilayer boards come from thermal stress during rework, not the original defect. People keep pushing these expensive hot air stations like they are the only way, but my old Weller soldering iron and some flux have fixed 4 out of 5 motherboard caps this year without any heat gun. Found the stat buried in a forum thread about military spec repairs, and it made me rethink my whole setup. Why spend $400 on a station when a $30 iron gets the job done 80% of the time? Has anyone else noticed their success rate dropping after switching to air?

2 comments

price.alice•1mo ago

Frustrated with a dead motherboard, then found a simple trick that actually worked

I spent about 3 hours last Tuesday trying to revive an old HP desktop that just refused to power on. Checked the PSU with a multimeter, reseated the RAM, even swapped the CMOS battery. Nothing. I was about to tell the customer it was totaled but then I remembered a tip from a forum about the front panel headers. Turns out the power switch connector was slightly loose on the pins, like maybe a millimeter off. I pushed it down firmly and the thing booted right up. Felt pretty dumb but also relieved on not having to replace the board. Has anyone else got burned by something that simple on a board that looked totally dead?

2 comments

ben436•1mo ago

Swapped from a heat gun to a hot air station for SMD work and wish I did it sooner

Been working on circuit boards for about 6 years now. Always used a regular heat gun with those little nozzle attachments. Got the job done but I kept accidentally blowing tiny caps off the board or heating up the whole area. Picked up a proper 858D hot air station off a guy on Facebook for 35 bucks last month. The difference is night and day. I can actually see what I'm doing and aim the air right where I need it. Reflowed a dead laptop GPU in like 30 seconds flat. The temp control alone is worth it. Anyone else fight with a heat gun for years before switching?

2 comments

river182•1mo ago

That dead eMac power supply I dug out of storage surprised me with a 200V cap still holding a charge after 8 years

Was poking around a junk pile at a friend's shop last Tuesday and measured a capacitor that still read 198V, guess those old Apple power supplies really do keep their juice way longer than I expected has anyone else been zapped by a capacitor that was sitting for years?

2 comments

the_sarah•1mo ago

Chat with my neighbor about soldering irons made me rethink everything

He asked why I kept my Hakko at 380°C for board work, said he does all his joints at 315°C. Tried it on a stubborn capacitor last week and it flowed way cleaner, less pad lift. Has anyone else dialed their temp down and seen better results?

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tarab54•1mo ago

Why does nobody talk about flux residue causing intermittent failures in microsoldering?

A seasoned repair tech told me my cold joint diagnosis was wrong and it was actually leftover flux eating through the board over 6 months, and now I scrub every single repair with IPA like my life depends on it, has anyone else had a board fail weeks later from something you thought was clean?

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faith_lopez48•1mo ago

Spent 4 hours chasing a ground loop on a 1980s Marantz receiver that ended up being a single bad solder joint

Pulled my hair out for half a day on this one. Had a low hum that got louder with volume, checked all the caps, swapped transistors, even rebuilt the power supply section. When I finally broke out the oscilloscope and traced it back, it was a cold solder on the ground pin of the tone control board. 10 seconds with an iron and it was gone. Has anyone else spent way too long on something that simple?

2 comments

evanfox•2mo ago

Changed my mind about solder wick after a desoldering nightmare on an old Pioneer receiver

I was trying to replace some bad capacitors on a Pioneer SX-780 (you know, the usual ones that go leaky). I've always just used a solder sucker, figured it was fine. But I was fighting this one ground plane joint for like 20 minutes, kept re-heating it, and I think I lifted a pad. Huge bummer. Grabbed some cheap solder wick I had laying around, and it cleared that joint in maybe 10 seconds flat. Has anyone else had a rough lesson like this that made you switch up your go-to tool?

2 comments

shane_ross•2mo ago

Old schematic vs new schematic reading - night and day

I was fixing a 1982 Marantz receiver last week and had to pull out the original paper schematic. Man, those old diagrams are beautiful - everything labeled clear, parts numbered in order, no guesswork. Then I went to look up a board for a 2018 Samsung TV and the PDF was a grainy scan with parts all over the place. Has anyone else noticed newer service manuals feel rushed compared to the old Japanese stuff from the 70s and 80s?

2 comments

valwest•2mo ago

Bought a cheap soldering station to save $70, now I'm out twice that

I needed a new soldering station for some board work, so I grabbed a $40 no-name one off Amazon. First week the tip wouldn't hold temp, then the handle melted on the third job. I spent another $70 on a Hakko after that, plus $20 in ruined components from cold joints. Has anyone else had junk tools cost them more in the long run?

2 comments

reese177•2mo ago

Got humbled by a crusty old power supply at a garage sale in St. Louis

Picked up a beat up 1980s oscilloscope for $20 last Saturday and it ended up having a cold solder joint on the main transformer connector. Spent three hours troubleshooting before I noticed the crack with a jeweler's loupe. Has anyone else had a simple fix like that eat up their whole afternoon?

2 comments

nancy275•2mo ago

I finally found a way to fix those flaky PS4 HDMI ports without a reflow station

I had this one PS4 where the HDMI port was loose but not totally busted, and my usual trick of just applying more solder wasn't cutting it. After about 3 tries, I tried using a tiny dab of epoxy (the kind that sets in 5 minutes) around the back of the port pins before soldering. It held everything in place perfectly on a repair I did for a guy in Toledo. Has anyone else tried this kind of reinforcement trick for HDMI ports?

2 comments

rose_hart31•2mo ago

Almost fried a $600 board because I missed one tiny capacitor

Was troubleshooting a power supply on a Samsung TV in my garage last Tuesday and went straight for the main IC without checking the caps first. Turns out a bulged 10uF cap was sending voltage ripple through the whole circuit and I nearly cooked the replacement IC. Anybody else ever chase a ghost issue for a couple hours only to find a dumb cap problem?

2 comments

foster.wade•2mo ago

That capacitor I missed caused a 3 hour redo on a motherboard repair

I was working on a 2015 MacBook Pro board at my bench in Denver last Tuesday. Everything tested fine but the power rail was sitting at 11.8V instead of 12V. Chased dead traces for two hours before I spotted a tiny cracked cap near the ISL6259 that I swore I checked. Swapped it out and voltage snapped right to 12.0V. Has anyone else had a tiny part like that wreck their whole afternoon?

2 comments

carr.willow•2mo ago

Customer said my solder joints looked 'cold' and I got defensive at first

I was fixing a vintage amp last month and this guy told me my solder joints looked cold and might crack later. I was annoyed but looked closer and yeah, they were dull and not flowing right. Anyone else have a customer call out something that actually made you better at the work?

2 comments

elliotc10•2mo ago

Compared cheap vs expensive soldering flux. Night and day.

Been using that $4 bottle of flux from the hardware store for years. Sticky, smelly, left nasty residue. Picked up some Amtech from a guy at a swap meet for $15. Three bucks more but man. Flowed so smooth. Board cleaned up like new with just alcohol. Anyone else stubborn about using the cheap stuff way too long?

2 comments

the_sarah•2mo ago

Just hit 500 board repairs in 18 months at my shop in Austin

I was going through my repair logs last night for the IRS stuff and realized I crossed 500 boards fixed since I started my little shop off South Lamar. That number felt huge to me because when I started I was just doing friends' broken game consoles in my garage. Most of them are laptop motherboards and old Xbox power supplies, but a good chunk are those weird HP all-in-ones nobody wants to touch. Has anyone else kept a running count and been surprised when you hit a certain number?

2 comments

mila_mitchell•2mo ago

Had a customer bring in a 1995 Sony CRT he found in his attic last month

Guy walks in with this old Trinitron, says he wants me to recap it because it's his kid's first console setup. He was super chill about the whole thing, even brought a six pack of soda for my trouble. Opened it up and it had the original caps still in there, but only one was bulging near the flyback. Got it running again for $45 parts and labor, and he sent me a pic later of his kid playing Sonic on it. Anyone else get random nostalgia jobs like this that make your day?

2 comments

grant_palmer•2mo ago

My scope probe went bad and I wasted 3 hours chasing a ghost signal

I was trying to fix an old amplifier from the 80s last weekend and kept seeing this weird 60Hz ripple on the output. Spent like 3 hours swapping caps, checking grounds, even pulled the transformer to test it. Finally grabbed a different probe out of my drawer and the ripple was gone. The old probe had a broken ground clip that was just dangling there. Made me feel like an idiot but hey, at least I learned to check my tools first from now on. Has anyone else gotten burned by bad test leads or probes before?

3 comments