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

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

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

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

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

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

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

Simple, well explained...PERFECT! Love your videos.... Keep it up!

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

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

This is really cool thanks. I watched a 3hr video while making a subwoofer box. Good video.

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.

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

GREAT STUFF! REALLY ENJOY THIS.

Great video! Very informative! Thank you!

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 KZfaq, ever.

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

Hot damn! Quick. Clean. To the point.

That's awesome, now if only i knew what to look for in my not working Denon, and how to replace lol

Love the fast pace!

bravo! your video is the best one yet, direct and very clear, the way it should thank you, many will find it helpfull thanks again

Great work sam, take care.

you are gifted!! keep up the good work. thank you.

🎉 Love this speedrun diagnose. 🎉 It is master level

Nice fault finding. Impressive.

Good info and diagnostic flow right here.. pay attention kids.

Another awesome video!

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.

It's depressing how such a tiny tiny component is causing such a large issue

Great vid!

Are you familiar with Memphis amps? I just bought one from a yard sale it's a old school Memphis pr600. I have power going into it and a good ground. I'm bench testing it but neither the power light or the fault light will light up. No spark touching terminals either. Fuses are all good. Any idea where to look?

just one tiny component and the amplifier don't work , every component no matter how big or small has their own function

I have an MB Quart Onyx 1500.1 D amp. I don’t have the one tester you have, I only have a multimeter. The amp turns on, the inputs seem to be good from a continuity test, no protection mode, and no sound… anyway I can figure out what’s bad on this thing with just a multimeter or do you know of known issues??

What are you connecting your scope to ? Just one probe to the ground ? And you probing around with the other probe ?

I enjoyed this video, i was wondering if you can help me with a spl z2x1600 it has a short i took out all the output transistor three of the mosfet but even with the absence of these power mosfets the empty slot still reads short

That was fkn amazing to watch .. and listen .. and I’ll be repeating this to try and follow .. hahah Mad man ! Thank you tho. VERY Helpful

Got a d4s jp33,no sound no visual question as to something burnt or blown,all traces are fine,I'm pissed and stumped!! Someone said ic card,idfk. Great vid buddy

I have a massive 3600d when cold has like no output till it warms up and ideas . Would like to send it to you for repair if possible .

you are an amp master

Do you have any suggestions for me? Audiopipe 1800.1 I've got continuity between 12v and ground power terminals. I've removed all the mosfets and still have continuity across the board. Continuity was tested with the amp completely disconnected from any power.

Hello Sir. I have a vintage Marantz pre stereo amplifier pm420 and it has been playing very well until earlier this morning when i was listening to a radio station and it made a single click sound and there was no sound at all so i switched it off for about 10 minutes and and switched it back on but still no sound please help me out as i am not good with electronics

School u went to u so good at what u doing

I know it's a long shot, but i got a 80s hifi amp, a kenwood ka55, all works except sound. I took it apart and visually inspected it, no obvious faults. The visualizer works and responds to volume changes, it just makes no sound. Not even a pop. Any ideas to go from here? Waiting on a service manual

Hey I have a question can you upgrade components on any amp to make it better?, like the caps and rail voltages and moffets

I have a 4 channel that has output on 3 speakers but not the 4th, is this video a good place to start with when trying to diagnose the problem or do you think it’s more related to the rca input circuits

hi, i have a morel 5 channel amp that turns on but won't turn off even if i remove the remote wire. where do you suggest i start diagnosing?

👌 what is that humming sound when put on

What could be the potential cause of my taramps bass 8k not powering on I did find that the remote terminal has a ground on it if I can find the cause of that I can find the problem the amp has always has sufficient voltage and it didn’t get hot or it never smoked I went to listen to it one day and it just wouldn’t come on. I’m assuming the ground on the remote terminal is the issue because as soon as I unhooked the remoter my second amp powered back on

I would love to see this on the Apeg PF-500. There are a few hundred of those amps that power up but no sound. If you could find the "common" issue it would save many of them from the trash depositories. It seems its the PCB but the factory fix is to get a new board (which runs 200+ dollars....IF you can get one!)

I have an alpine Mrd 345 and the impeller on the fan has fallen down into the amp and was lodged between the crossover card and the case and I only get static now , any ideas

My amp has a short circuit when I replace the output transistors the transistors gets blowing I can't find the fault so how do I find it

awesome video. I would have a question on a problem with an amp that randomely does not deliver sound. when i feed it with very high input volume it turns the outputs on and keeps running. After I can even turn down the input volume and it keeps running without problems. Do you or some youtubers here maybe have suggestion on where to start searching? Maybe the Capacitors?

That's awesome

Man I would like if you can help me on my pg zpa 0.3 amp it would power but half my board wont work so I’m mostly stuck and not knowing what’s going on

Hi. Sorry for the question. Where did you connect the negative cabel from the scopprobe?

I have two Rockford fosgate amps that are powering on but not putting out anything and I was wondering if I could send them to you and you could repair them. Ofc I would pay

what is the tool your probing with called?

Awesome video. I have heard amps can kill you and should be left to sit unplugged for a couple days, was this plugged in to a live? How can I learn how to fix amps the best way please

Very good video. I have a crate amp vc3112b and sometimes its sound disappear but it stills on. Nobody in my city knows how to fix it. If you help me I'd be very happy. THanks a lot

How do we get in contact with you to repair an amp

Do you have anything for a Rockford fosgste 155 bdcp

Do you still work on amps? I’m having the same issue 😢

I need some help, the PCON Continuous power source isn't getting the power that is needed. Can you help me figure it out?

What should I check first? PG amp. Mosley’s are not shorted. Amp won’t power on. Connected to known-good battery, amp loads bat down to 4 volts and draws 1.5 amps. No obvious blown components.

Iv got an old techinc system, the tuna works but tape and cd decks only put out a tiny tiny bit of sound! Can't hear it unless you put your ear to the speakers. any ideas folks??

Straight big Pimpin’!

I have a planet audio old school amp no sound but I don't have the tools like you wat can I use ?

hi i have an amplifier that powers up and works fine for half an hour then it shuts down by itself. afterwards it would just switch on and immediately shuts down. i keep switching it back on and it'll shut down immediately . would u know what is wrong with it?

What would cause my power Acoustik lt980 amplifier to work but vocals are playing thru the subwoofers? Amp has LPF HPF and Subsonic adjustments. If I switch to LPF I get no bass or sound

Hello mate are you from UK and do you fix amplifiers because i have 3 of them that i would like to fix, but there are no people that do this kind of job.. ?

I'm having trouble with a American Bass ph4000.1 MD v2 amplifier. It's stuck in Protect mode and I can't figure it out

I have a Rockford fosgate p400-2 and the sound is choppy. It cut in and out. Never goings in to protect. I tried using a a six to rca to see if it was the cables. Same thing. I’ve ran the wires twice. And changed the speakers 3 times. Something with the rca output I would guess

Cheers mate 👍

Is that just a big multimeter?

Can you help with my amp problem..i got all then ground,power supply and rem wire correctly but when i plug in the rca cable then my monoblock blown along with a pop sound inside the amp..

Wow I think I got it ! Soooo am just going to throw it away right? Thanks got it

what if the pre amplifier is good and the fets are good, but there is no signal getting to the port one of the ports.

There is also the claw hammer method of repair. Amp is destroyed but don't you feel better

Ok a year later lol so my amp is R1200 rocksford fosgate and it stopped working untill i found out if i put a little pressure on the gain setting knob the bass turns on as it should but when i release it goes off any tips on that? Or is the amp done

I have a brand new xtr 2500.1dz that got wet while not even wired up (nissan titan rear sliding window installed in a silverado but seal was leaking) and I sprayed electronics cleaner on the board thinking it would clean corrosion off but my amp comes on but doesn't have sound. Not in protection either

what are the circle coli things and what do they do?

So... this is the first video I've seen from you.... I was hoping to see a repaired amplifier. Oh well.

Hey sam i have a 6000.1 ds 18 amplifier it playing normal but when turn up it trip to protect i check everything and find nothing. I check the output driver ic but the number scratch off can u able to say whats the driver ic number

I always do a visual inspection and sniff test before jumping into troubleshooting. You can see a burn mark on the inductor. Just another method to help get to the root cause.

Barevids can I message you direct about an amplifier repair?

Any interest in repairing a Bass 30K?

Great material, I have one question about the Phoenix Gold car amplifier, I disassembled it and noticed that the transformer, one of the turns is very loose, should I attach it somehow or glue it with some special glue?

Hello ... i have klipsch active subwoofer 300w it has problem when i increase volume above 50% my sub going into protection mode .. Can you help me how can i solve this problem???

Where do you connect the testers negative lead ?

Where is his black negative prob? if he's prob with the red. Do I connect the black lead from my meter to the ground negative input on the amp or my power supply?

Yor gra8 bro

new to this, where is the other probe of the multimeter ? and hes using the black negative on the circuits ..wheres rhe red probe ?

Can I send you my Majestic 500W amplifier for repair?

Hey can u possibly help me on my amp it does the same thing but can't find the faulty part :( I'll pay you if I can ship it to you so u can look at it ?

what if my taramps 1200.1 goes straight to popping fuses ?

My headphones will only work on left side……I’ve tried two different sets of headphones and it’s the same problem on both. The speakers both work fine though….any suggestions would be helpful gents 🙏🏼🎧

Ive been trying to get someone to do this magic on an amp for 10 years. Nobody around here seems to fix amos anymore. I have a Alpine Vpower M-1000 mono block that is just like this. Powers up, no protect light, no sound coming through 😢

at 1:18 he just casually rests his hand on the capacitors...

genius

Suggestion. 60 seconds more would have made this video more watchable ;))