Was working on a 10 year old Samsung TV from a customer in Portland. No picture but sound worked. Pulled the board and saw nothing obvious. No bulging tops on any caps. Decided to desolder one anyway just to check. Sure enough the bottom was corroded and leaking brown stuff. This was on a power supply board, main filter cap. Never seen one where the damage was all underneath. Now I desolder suspicious caps from boards even if they look good. Learned this trick from a forum post back in 2018. Has anyone else found hidden cap damage like this before?
I used to think slapping thermal pads on every hot component was a safe bet... until last month when I worked on a gaming laptop from 2019. The VRMs were hitting 110C under load and I figured pads would fix it. Turns out the heatsink had warped just a tiny bit and the pads were too thick, making things worse. I ended up using a thin layer of decent thermal paste on the VRMs instead and the temps dropped 15 degrees. Sometimes the cheaper, simpler fix is actually better than the fancy stuff. Anyone else run into a situation where the obvious fix backfired like that?
A guy named Dave at the Milwaukee repair meetup told me to stop fighting cold joints on vintage boards and just hit them with fresh flux before even touching the iron. I spent 6 months reflowing the same old amplifier board three times before I tried it. Now I keep a flux pen in my kit and it saves me like 20 minutes per job. Has anyone else found a weird trick that totally changed how you work?
I had a laptop battery pack from a 2018 Dell that was swollen but still holding a charge. A guy in a Facebook group swore you could shrink a swollen pouch cell back by freezing it for 24 hours. I figured it was a waste of time but I tried it anyway with a ziplock bag and a normal freezer. To my surprise it flattened out maybe 80 percent and the laptop even ran stable for two more weeks before I replaced it. Has anyone else tried extreme temperature methods on lithium cells or am I asking for trouble down the road?
I used to work at a repair shop on 14th Street back in 2018, stopped by there yesterday to say hi. The new guy had this big shelf of labeled parts and a heat gun station setup I never bothered with. Made me realize I wasted so much time hunting for screws and using the wrong tools because I just grabbed whatever was closest. Anyone else ever go back to a place you worked and see how much easier things could've been?
I was fixing an old Kenwood receiver from the late 70s last week. Everything inside was those big through-hole caps you could actually read the numbers on without a magnifier. It got me thinking about how much the boards have changed in 40 plus years. Now everything is surface mount and you need a microscope just to see the values. Does anyone else miss the days when you could work on circuit boards with just your regular glasses and a good pair of needle-nose pliers?
I pulled a 30-year-old oscilloscope out of storage last week and just plugged it in like an idiot. It ran fine for about 20 minutes then the power supply cap vented smoke all over my bench. I always knew about reforming but figured it was just paranoia. Now I have to replace six caps and the smell won't come out of my workshop. Anyone else learn this the hard way or am I just unlucky?
I've been fixing up some vintage audio gear from the 70s lately, and I keep seeing posts where folks use lead-free solder on these old boards. The issue is that the old components and traces are super sensitive to higher melting temps. Lead-free needs around 220°C, while the old 60/40 stuff melts at 190°C. I've had to fix lifted pads on three different receivers last month because someone used the wrong stuff. Anyone else notice this mistake when working on older electronics?
My buddy and I got into it last night about solder types. He swears lead-free is fine for everything and says I'm stuck in the past. But I've been fixing old audio gear for 10 years now and I swear lead-free joints crack more on vintage boards. Last month I had to redo a whole receiver because the lead-free joints on the power supply failed after 6 months. On the other hand, I get that lead is bad for you and the environment. What do you all use for general repair work and why?
Back in the late 90s, if I needed a 100uF 25V cap for a TV repair, I could walk into any RadioShack and grab it off the wall for under a dollar. Now I have to order a 50-pack online and wait a week, paying shipping that costs more than the parts. Has anyone else noticed the local supply drying up, or is it just my town in Ohio?
For about 8 months I was doing board repairs and getting random failures after a few weeks. I finally realized the flux residue was causing leakage paths. Switched to a 99% isopropyl alcohol scrub after every rework. My success rate went from maybe 70 percent to over 90 percent. I also started using a dental pick to get under chips before rinsing. Has anyone else noticed a huge difference from just cleaning better?
Guy brought in a vintage amp from the 70s and said my wick work looked like a bird's nest. He showed me how to use a proper desoldering gun with a clean tip and consistent angle. Now I get through boards in half the time, any of you swear by a specific model over a cheap one?
I dropped $40 on a no-name tester from Amazon last month and it read a 50uF cap as 12uF. Ended up swapping three perfectly good boards before I figured it out. How much have you guys lost trusting bad tools?
Guy in Tampa insisted I was ripping him off because he found the same part for $8 on Amazon, but didn't account for the fact his TV needed the old one desoldered and 4 bad traces repaired too, what do you do when someone just won't understand labor costs?
After 5 years fixing old game consoles, I've seen way more lifted pads from people blasting boards with hot air than from careful iron work, especially on those brittle Nintendo DS boards from 2004-2008. Has anyone else had better luck just using a thin tip and low melt solder on delicate traces?
Had a guy come into my shop last Tuesday with a 10 year old microwave that wouldn't heat. I told him it'd be $40 to check the magnetron and maybe swap a fuse. He said I was trying to scam him and that he could buy a new one for $60. I just pointed at the door and told him to go buy one then. Some people think our time and skill is worth nothing because parts are cheap online.
I was testing a power supply in an old stereo amp last Wednesday and the probe tip snapped off inside a connector. The insulation had dry rotted from all the flux fumes over the years. I had been using that same Fluke probe set since 2021 without looking at it once. Anyone else had a simple tool fail on them out of nowhere like that?
My uncle Bob told me to just leave my dead 27-inch CRT unplugged for 30 days and the caps would "reform" themselves. I was like okay sure, waited a whole month, plugged it back in, and it popped and smoked worse than before. Turns out he got that tip from some guy at a garage sale back in 2003. I ended up finding a bad solder joint on the flyback after I actually opened it up. Has anyone else gotten repair advice from a family member that was just completely bonkers?
I started fixing phones and consoles in my garage two years ago for some extra cash, and yesterday I counted my logged jobs to find 513 completed board repairs. That number floored me because I honestly thought I'd quit after the first 50 when a bad microsolder job ruined a customer's iPhone 7. Has anyone else tracked their repair count and felt surprised by the milestone?
Honestly, I used to think you could get by with just a soldering iron for small board work on iPhones. But last week I watched a video from a guy in Austin who showed how a $120 hot air station saved him from trashing a $300 logic board. He melted a stubborn shield can off in like 30 seconds flat, no damage. That convinced me I was being dumb by trying to brute force everything with a chisel tip. Has anyone else dealt with learning this lesson the hard way on a mid-range phone?
I used to scrub boards with isopropyl alcohol and a toothbrush then blow them dry. One day I repaired a vintage receiver from 1978 and the owner said the board looked "foggy". That's when I learned you need to use deionized water first then alcohol to get all the residue off. Now I do a 3 step wash and haven't had a single cold solder joint since. Anyone else find out they were skipping a basic step for way too long?
Picked up a cheap 858D hot air rework station last month to compare with my trusty iron on a board full of switches and the heat recovery time for ground planes is shockingly close for a third of the price, anyone else notice the budget gear catching up?
Was working on a Dell Optiplex at my kitchen table last Tuesday. Had it all apart, then realized my anti-static mat was still in the truck. Figured I'd be fine. Got up to grab a tool, came back, touched the board and saw a spark near the RAM slot. Machine won't post now. Anyone else killed a board by skipping the basics like that?
Was trying to fix a 2015 MacBook Pro that wouldn't charge. Had the board out, was using a multimeter to check some traces on the back side. Then I sneezed and my hand brushed against a chip. Heard a tiny pop and saw a spark. Now the whole thing is dead, won't even power on. Anyone ever dealt with static damage like this? Is there any way to fix a fried controller chip or am I looking at a whole new logic board?