I'm an idiot. This repair didn't go as planned. Alpine PDX1000.1

Thanks for supporting the channel guys! I hope you were able to take something away from this one. And make sure you watch to the end for some woofer excursion and other clips!

[wilsonrawlin]

I'm 59, and Engineer Tech IV, and a great ET III and cable fabricator. I'm rock solid at diagnostics for the most part.
Still your comprehensive knowledge of these amps and components just blow me away. You exhibit decades of knowledge that only comes with time or amazing awareness/comprehension. Seriously you are a freakin genius, Sam. Seriously keep growing your knowledge because your awareness is going to create amazing things no one else has thought of before.
You need to sit on what you learn on these amps that can help you to create the ultimate amps. Patent your intellectual property and Trademark your designs. You will be set for life.

[justabasshead]

The fact that you didn't edit out the mistakes says so much about you as a person! Your a beast, love the content and keep the raw footage coming in we absolutely love it

[Bassotronics]

Valuable lesson learned when we are trying to fix something. Don’t assume everything is perfect the first time; recheck all of your steps just in case.

[joshholden]

Such a great genuinely humbling video mate. 🍻 cheers.

[dumblookingrock]

we've all had to eat humble pie at some point, great vid. Once received a EXO phone system chassis from a distributor, didn't check the voltage selector on the back and assumed it would be set correctly being it came from an in country distributor. Plugged it in and my heart sank when the magic smoke started flowing. Checked the back and the selector was set to 110v. Thankfully i hadn't put any cards into it so only had to pull down the power supply and replace the unhappy bits inside.

[nednedtom]

Used to repair PBX 's.replaced and Reversed an 8 pin ic switch for the PSU . Was like an arc welder when plugged in.

[sedon]

Hugely apriciate this Video. 99% of youtubers would sweep a video like that under the rug.
I once repaired my amp and turned it on and it seemd like it worked fine again. then the fan kicked on and the solder i bent up slowly came down due to the vibration of the fan. Shorted random bits and bobs on the board. Took a lot of time to find all the parts the solder touched and killed.
Keep up those videos been bingewatching them in the last few. Actually thinking about design my own Class-D amp just to try it out.

[mikehonda]

Lesson I learned making a guide of my 1200/1v3 amp that is the amp in page photo, I made the booboo of slipping and arcing the rectifiers together with my multimeter probe. Talk about a loud ass boom….. luckily I have fast hands. Everything is ok, and I still have my guide for repair. Be careful with high voltage amps, and do, use fuses and the proper equipment to test high voltage equipment.

[thegreatmrp]

I have done a lot of troubleshooting over the years and it always comes down to the basics, I always assume I could have messed up, and whether or not i did it seems like the issue gets fixed a lot faster. Love your videos!

[dlcarburetor]

For sure Sam. Keep sharing what you do. It's you and the way you present you that people keep coming back for. A feature short film of the Proton would be awesome

[adrianalexander]

My I only happen to meet your channel yesterday. Let me tell you that i have been watching your videos till I am so impressed with your methods and like the and .... you know what you are talking about.... and you know what you are And.... you remind us of simple things that we may have or Excellent work Keep up the good work and Spreading the knowledge is awesome... Hope one day i can come to your shop when in the UK BTW Im from South Africa, been also fixing things for over 35 years. Your channel has re-ignited the

[AmalgmousProxy]

Dang, you are brutal on yourself. But I absolutely respect still posting this. My biggest mistake to date has got to be while probing a failed bench top power supply I slipped and bridged a power supply with a ground. A 1 inch section of trace lit up like a light bulb filament then POOF! Opps...

[chrisherron]

To make a long story short-ish: I accidentally shorted my RCA inputs on an old Pioneer amp. I ended up replacing the output mosfets which fixed it (I tested it outside the case). In my excitement after getting it working I forgot to cut the legs on the new mosfets. I reassembled it into the metal case and I'm sure you can guess what happened. The amp "blew" again but it took out more than just the mosfets. It still sits unfixed to this day, but I haven't given up, I'm just taking a break from it lol.

[diabolicalartificer]

Easily done. I do at least 10 stupid things B4 breakfast. B+ is another name for Vcc +, an American term, in UK we use HT = high tension = high voltage. SW is short for switch, B+ SW = positive rail switch. It's a good idea to keep a notebook as a record of jobs, so easy to forget, a record stops you disappearing up your own arse again, hopefully. Thanks for another grand video, look forward to these everyday, cheers....DA.

[orangejjay]

I work in IT and was troubleshooting a server that wasn't coming online. This was at a major data center that serviced a large metro area (we're talking 8 million people).

Long story short, I put my toner on a line that took down four central stations and killed telephone and data for about 3 million people.

I never did admit to what I did as they would've fired my ass for it. Made the news and everything many many years ago.

Best part though: I learned to be just a little bit more careful and to not let someone else rush me when I'm trying to do my work. Still make mistakes but none that affect millions of people at a time (that I'm aware of).

[beardedgaming]

my story - had a lighting circuit in the shop they had used all black wiring through a double pole switch. i was removing the 8 foot light fixtures and had cut away from the back of the switch - what i believed were the runs going to both light banks. however, there was a piggy backed wire in a junction box farther up that i did not see and this left one of the wires live. when moving them with my cutters - it grounded. melted half of my cutters off and welded the metal handle to the junction box. didnt trip a breaker but they were 50A breakers.

[offroaddreamsxed]

Awesome video. I just went back the other day and watched one of your old quarter wave videos where you were sitting at a table outside talking about T line quarter waves. Back when I was doing electronics repairs I had a VCR that blew up a bunch of DC capacitors in the power supply circuit on the bench. Because of some moron I worked with dropped some stray solder balls on the board. It was like a paper confetti bomb went off in the workshop.

[Jamez]

Love seeing ya put a full bridge amp that isn't from Brazil on the bench. So many guys knock Brazilian full bridge without realizing brands they know and like are using them.

[kingredleg]

Was servicing a five thousand dollar computerized sewing machine. It was a hot dry day. "ZAP" the static charge hurt me and my wallet. Found a used motherboard for four hundred US dollars. The lesson was, touch metal ground before petting the circuits. Another thing, those ribbon cables are a pain in the butt to get just right. Especially for touch screens.

[DisastrousNonsense]

Not an amp repair or even a tech repair,

but I once had a French horn with a small bit of a scrub brush lodged inside one of the rotary valves, which meant I couldn't even get the valve out to remove the stuck brush. I tried using a tool that's basically a screw soldered onto a long rod, to try to get it to catch on the brush so I could pull it out, I ended up screwing straight through the other side of the valve casing 😬 it left a hole that surely would've made part of the horn unplayable

Luckily, I was able to close it up a bit by hammering down the metal that the screw tore up, then I sealed it with some soft solder. It was (mostly) unnoticeable afterward!