c/electronics-repairers

Swapped my old Weller station for a TS100 iron and I'm not going back

That moment I found out I was desoldering backwards for years

I was working on an old CRT TV from the 90s last month, trying to pull a blown capacitor off the board. I had my iron set to like 400 degrees and I was just prying at the legs with my wick, getting frustrated because the solder wouldn't budge. A buddy of mine who does board repair for a living walked over and asked me why I was heating the component side instead of the pad. I didn't even know there was a difference, I just always put the iron wherever it touched. He showed me how to add a little fresh solder to the joint first and then hit the pad from the bottom, and the cap just fell right out. Felt like an idiot honestly, but it made me wonder how many other basic moves I've been messing up without knowing. Anybody else have a simple trick they learned way later than they should have?

Compared hot air vs. infrared for removing potting compound...

Decided to try my new IR station on a potted industrial sensor last Tuesday and it cleaned that goop off in under 90 seconds. The hot air method I've been using for years took me 20 minutes and still left residue. Any of you guys found a tool that just kills it for a specific job?

Hot take: recapping old gear is sometimes a waste of time

I spent 4 hours last Sunday replacing every electrolytic cap in a 1978 Pioneer receiver, only to find the real issue was a dirty volume pot. Now I've got a perfectly recapped board and the same scratchy sound I started with. Would it be smarter to clean controls first before blindly swapping parts on vintage audio gear?

Spent Saturday swapping hot air for an infrared preheater on a stubborn laptop board

I had a Dell motherboard with a corroded power jack that just wouldn't take solder no matter how much flux I used. My hot air station was heating up the whole area and I was worried about melting the nearby plastic connector. So I pulled out my cheap infrared preheater board I got off Amazon for $45 last year. Set it to 150 degrees and let the board sit for about 8 minutes. The difference was night and day - the solder flowed right into the pads without scorching anything nearby. I used to think IR preheaters were overkill for basic laptop repairs but now I'm a believer. Has anyone else made the switch from hot air to IR for motherboard work?

Kid at the library gave me a broken tablet, asked me to fix it in front of him

Met this 10 year old at the Greensboro library last month who handed me his cracked Kindle saying "can you make it work again?". I showed him how to reseat the battery connector and he watched every move quiet as a mouse. Has anyone else had a random stranger just hand you something to fix on the spot?

Spent $80 on a flux pen and it fixed a stubborn cold joint in like 10 seconds

Been fighting a loose connection on an old motherboard for two hours with a regular syringe, grabbed one of those fine tip flux pens off a recommendation, and the joint finally flowed smooth first try, anyone else find a specific tool that just clicks with a certain repair?

Swapped to a Hakko FX-888D after 6 years of using a $25 iron from Amazon

The difference in heat recovery alone saved me about 15 minutes per board on a batch of 20 PS4 HDMI ports I fixed last month, has anyone else noticed how much cheaper irons struggle with ground planes?

Blew a $60 capacitor by using the wrong solder

I was recapping an old Pioneer receiver and used some random 60/40 solder I had lying around. Turns out my iron wasn't hot enough for the big ground planes and I ended up heating that cap for way too long. It bulged right up and popped within 5 minutes of powering on. Has anyone else killed a component just from bad technique?

Is cold solder really always the problem or do we blame it too much?

Had a guy bring in a TV last month with a power issue, I started checking caps and cold joints right away, but he stopped me and said 'have you even looked at the fuse yet?' - made me wonder, are we too quick to assume the hardest fix when the simple one is right in front of us?

A guy told me I was 'just a parts swapper' in front of a customer last month

I was replacing a bad capacitor on a 10 year old Samsung fridge at a house in Oak Park. The customer's brother was watching me and said 'anyone can swap parts, you're not really fixing anything'. I told him diagnosing a dead start relay takes more than luck. But it got me thinking, where's the line between replacing parts and actually repairing? Is finding the root cause enough, or do you have to rebuild components to call it real repair?

Why nobody talks about using a hot air station vs a soldering iron for desoldering

I spent like 2 hours last week trying to desolder a crappy capacitor off a old motherboard with my iron and it was a nightmare. Pulled out my $40 hot air station from Amazon and had that thing off in 30 seconds flat with zero pad damage. Ever since I started using hot air for bigger components I haven't looked back. Anyone else find a specific tool that totally changed how you do one type of repair?

Changed my mind about buying cheap flux

I used to grab those $6 flux pens from Harbor Freight and call it good. Last week I spent $28 on a proper bottle of ChipQuik flux and it actually saved me a board I'd been fighting with for days. The solder just flowed right instead of balling up like before. Has anyone else had a cheap tool cost them more time than it was worth?

Spent $60 on a hot air station from Amazon and it died after 3 boards

Bought one of those generic 858D units to replace my old Weller. Worked fine for a week, then the heating element started flickering on the third board I tried to reflow. Opened it up and the ceramic heater was cracked in half. Anyone know a decent budget unit that won't catch fire?

I finally saw what cheap flux does to a board after 6 months

A guy brought in his amp last week that I'd fixed half a year ago, and the joints had turned into a corroded mess from the flux I used. Grabbed a bottle of Kester from the shop now, has anyone else had a repair come back to bite them like this?

Capacitors popped on me mid-repair in a humid workshop last Tuesday

Was diagnosing a power supply board at my bench in Nashville when three electrolytic caps blew in sequence, smoke and electrolyte everywhere. I killed the mains fast but the smell stuck around for hours. Has anyone dealt with recurring capacitor failures tied to high humidity where you work?

Stopped by an old repair shop in Detroit last weekend

The guy still uses a CRT oscilloscope from the 80s to diagnose logic boards. Said he's never had to replace a single part on it in 25 years. Anyone else still rocking old gear that just won't die?

Pro tip: found a dead short on a motherboard by checking the caps with my finger

Was poking around a busted Dell Optiplex last Tuesday and felt one little ceramic cap getting warm near the RAM slot, replaced it for maybe 20 cents and the board fired right up, anyone else use the finger test for spotting bad caps on stubborn boards?

Hot take: I think reflowing cracked BGA chips with a heat gun is overrated

I keep seeing people in forums recommend hitting PS3 or Xbox 360 GPUs with a heat gun to fix the red ring or YLOD. I tried it on three consoles back in 2019, and every single one failed again within two weeks. The real fix is reballing or replacing the chip, but nobody wants to hear that because it takes more work. I ran a repair shop in Portland for five years, and I only saw heat gun reflows last past a month maybe twice. Am I missing something, or is this just a temporary bandaid that everyone pretends works?

Hot take: I think hot air rework stations are overrated for most jobs

Tried doing a simple QFN chip removal with my 858D last week. Took forever. Wasted 15 minutes just heating the board. Switched to my $30 soldering iron and some Chip Quik low melt solder. Chip came off in under 2 minutes. No board damage either. Why does everyone push hot air as the only way for SMD work?

Was looking up capacitor failure rates and found something wild

I was digging through some old service reports from a shop I used to work at in Austin, trying to figure out why we saw so many blown capacitors in that one brand of TVs. Turns out the failure rate for those cheap Chinese caps between 2015 and 2018 was like 40% higher than name brands. Found the stat in a repair forum archive from 2019. Has anyone else noticed a shift in quality on newer boards coming out?

Remember when soldering was the only skill you needed?

Last Thursday I had to fix a vintage amp that was all point-to-point wiring, took me back to 2005 when I started out. Three guys on the bench and we all had our own methods for the same joint, nobody could agree on flux or temperature. Is anyone else finding that younger techs just want to swap boards instead of learning to trace a circuit?

That $40 hot air station from Amazon almost set my bench on fire

I was fixing a broken Xbox controller last week and needed to swap a tiny capacitor. Grabbed that cheap hot air station I bought on a whim, cranked it to 400 degrees, and within 30 seconds the handle started smoking. Turns out the heating element was touching the plastic shell - no insulation at all. I tossed it outside and went back to using my soldering iron like a caveman. Anyone else get burned by those bargain bin rework stations?

Desoldering wick was ruining my work. Then I tried flux first.

Been fixing dead power supplies for years. Always fought with desoldering wick. It would just sit there, not pulling anything. Last Tuesday I tried putting liquid flux on the joint before the wick. Night and day difference. Stuff flowed right up into the braid first try. Has anyone else found that one simple change that made a huge difference?

Switched from ultrasonic cleaning to a good old toothbrush for small circuit board flux and never looked back.

Used to drop boards in the ultrasonic for 10 minutes until I cooked a vintage synth board last spring, now I just use 99% IPA and a stiff bristle brush for $3 - has anyone else found ultrasonic overkill for delicate stuff like old game consoles?