How to quickly diagnose a faulty amplifier - powers up no sound

quick video on my phone showing the thought process you should follow when presented with an amplifier powering up, no sound, no class D switching.

[barevids]

I changed both inductors for good measure as these are common failure points in these old amps, and she's working good as new.

[tike]

he's literally speedrunning amp repairs now, what a gangster

[brub]

Best video i've seen in a while. Perhaps because I have ADHD, i love getting loads of useful information in short amount of time. Very good video

[dennycote]

I learned more about amp repair in this vid than at any time ever in my life, EPIC!!!

[tomkzinti]

Swear to God or Allah or whoever you wish, Sam is the MOST concise, best-expressed and most well-worded explanator in English that I've seen presented on Youtube, ever.

[troepp]

Your videos are really useful if someone wants to diagnose/repair their own hardware, thanks mate!

[mikenickell]

Finally a YouTuber that gets straight to the useful information being sought.. You fuckin rock! Subscribed+

[seanperdue]

I can't say for sure that I'll remember what was said, but I sure enjoyed hearing about it! 🙂👍

[cuinoz]

You have the speaking talent to be a world class auctioneer. Whoa!!! Great video and I did enjoy your troubleshooting. Thanks for sharing.

[JoshCramer-gr]

Hey man I definitely am going to use this video in a few hours I have a friend bringing me an amp with no output. Thank you for going thru that

[cybersnake]

You've saved me a lot of time! And my adhd absolutely loves you!

[Skidmarks]

I had to check my playback speed. It wasnt 2× 😂. Excellent video- thank you.

[sw]

That tiny little inductor has a scorch mark underneath it, suggesting it's passed a crap ton of current and burned up. The 7812 that it supplies might be toast, or something on the 12 volt rail has shorted out as well. Be interesting to see what the overall damage was. Do a follow-up vid if you have time.

[dannytrejo]

Love these fast paced videos! Really hope to see more of these in the future!

[faris]

Would love to have more videos like this. Im having this problem been staring at my board for weeks.

[silasadams]

Wow you are a genius very smart and very well-spoken

[noyu]

Thank you for the speed run I'm considering purchasing the equipment to do the repair so I can get my amp working again

[Jon-yjyn]

I usually don’t comment but I wanted to thank you for quickly walking us through this. It was well informed, easy to follow. I’ll see if it fixes my issue, but bravo on the excellent video.

[georgeowen]

This amp is like my life. It’s the small 3 cent parts that fuck up the whole thing and keeps things from running smoothly.

[SassyXR]

subbed! Great video and no slow fidgeting just straight up diagnosis