This amp came in with no audio output - watch here as I guide you through my thought process of finding the origin of the fault, repairing it, and testing the amplifier to full power.
Пікірлер: 220
@jeremywilliams85585 жыл бұрын
Great video. You are absolutely genius with amplifier repair AND explaining it.
@beans3014 жыл бұрын
hey man. from US in DC. I've been waiting to find someone knowledgeable like this. was an installer but never learned circuitry. your videos are helping me to a serious point of understanding. thank you for this!
@OldSkoolF3 жыл бұрын
Your the man!!! Love your skills and the simple way you lead us through the problem resolution.
@SVSunnyJim Жыл бұрын
Wow, great diagnosis..I surprised myself that I could actually follow your thinking. Big amp too ... 👍
@RoadRunnerMeep5 жыл бұрын
This is why I love your channel, full of tech and education
@riveralley5 жыл бұрын
And that is life when repairing a amp.
@jasonbrindamour9034 жыл бұрын
This is just an FYI comment so thanks for another great repair video. But I am sure you know that if you have your PC (computer) playing audio to the input jack AND a waveform generator, the negative of that is essentially referenced to earth ground. I think when you use a cell phone (a spare in case it's damaged) then you keep that ref. off of your CPU saving it from damage just in case. Still watching and enjoying this video :)
@TS_sound5 жыл бұрын
Very informative. Had the same issue with a snapped transformer lead --> LM7812. Took me ages to find it, due to the fact it was under the sealant and I wasn't so experienced enough so i could resolve it quickly. That video is time saver for beginners ! Veryyy niceee !
@matthewmassey23335 жыл бұрын
Very happy to be watching a your repair videos again 👍
@bben5674 Жыл бұрын
Excellent work. Voice reminds me of Derren Brown
@HashDogg065 жыл бұрын
How does he only have so few subscribers & views, this information is actually useful unlike some drop kicks like 'PewDiePie' who have almost 100 million subs & 10's of millions of views per vid, just crazy.
@barevids5 жыл бұрын
Niche interest, dumb entertainment will always be popular with the masses
@dannyarmata88784 жыл бұрын
Most ppl cant understand what is he doing or saying because they dont know anything about circuitry and if you dont know anything about let's say organic chemistry you arnt gonna watch vids on it. Might as well watch foreign vids with no subtitles lol thanks Sam keep em coming love ur work
@QsTechService15 жыл бұрын
Thanks for sharing I used to have the same soldering station and heat station all in one same as that one you do ..worked like a beast until I retired it 😂
@barevids5 жыл бұрын
My one occasionally drops out the heat gun for a few days then starts working again. Pretty annoying!
@QsTechService15 жыл бұрын
barevids That’s crazy lol Never had to replace the heating element in the hot air station only the soldering Iron had for years worked awesome 👏 then upgraded to JBC equipment Seems like you know your stuff about amps how did you learn the stuff ? if you don’t mind me asking
@barevids5 жыл бұрын
@@QsTechService1 a combination of trial and error, and Perry Babins amp repair guide from Bcae1 ☺
@QsTechService15 жыл бұрын
barevids I’ll have to check that out you were very thorough with showing how to test with the scope pretty awesome I subscribed 😂 I have a few amps to fix for some friends what do you all fix if you don’t mind me asking
@8menime2 жыл бұрын
Thumps up for your videos, 2 thumps up for MaddyV 😁👌
@ruikazane51235 жыл бұрын
Same thing happened on my switch mode power supply. The transformer glue isn't holding it anymore! The wire are extended a bit to reduce the stretch and fatigue, then potted the thing with silicone. Definitely will never happen again.
@ettienekotze8687 Жыл бұрын
siiick music and great video
@strictlyamps8205 жыл бұрын
Nice troubleshooting there Sam!
@mad_mechanic4 жыл бұрын
Pure genius my guy another awesome vid
@lombechangala28033 ай бұрын
great videos man!!!Really learning alot.do you have a video were you tested and fixed a faulty pwm with a multimeter
@orac2293 жыл бұрын
Nice, a couple more videos like this and I'll be ready to repair my car amp that I lent to a (ex) friend and it came back with all the outputs blown and god knows what else as he tried to fix it himself.
@JohnDoe-mx1sq5 жыл бұрын
Just fixed my first amp, thanks :-D
@HashiriyaSquadron5 жыл бұрын
Brilliant work. Subbed.
@justScrollin06273 жыл бұрын
You are the smartest person on planet earth 🌏 👍😎
@jumpynotesАй бұрын
For the past five years, we have purchased two second-hand Power Amplifiers, each lasting less than two years. The last power amplifier we bought new in July 2022 was the Behringer EUROPOWER PMP2000D, which only lasted for exactly two years. All these power amps had the same issue: they could be powered on but had no sound output. Do you know what the common causes of these amplifiers to fail?
@andrevarnava61155 жыл бұрын
When you pulled that copper wire out after some testing... the amp whisperer
@waynewayne3709 Жыл бұрын
Very well informed video
@OldSkoolF4 жыл бұрын
New Favorite channel..
@MrJimmyak473 жыл бұрын
Nice video you sir are a wizard
@xelectronics54114 жыл бұрын
Nice vidoe I really enjoyed the explanation🤙🤙
@canerbayburt2491 Жыл бұрын
You are so grrat and so firendfull man i liked you i wish you will continue your greats 🎉🎉
@joshhanson67775 жыл бұрын
Sam, nice find! thats a good one! That would've got me,
@tyronearendse17223 жыл бұрын
Hi thanks for a very informative video
@ls87gbody5 жыл бұрын
awesome video sam.
@joshwandron6042 Жыл бұрын
I have a Sundown Audio 1500 SFI it blew some resistors by the channels that go up speakers
@abdomination3 жыл бұрын
awesome shit.. subbed. hope to learn more.. right now I'm trying to repair the amplifier from a definitive technology prosub 80 subwoofer. have a couple of resistors that have burned out. i can replace them and I find no other visible issues but would like to be able to find problems better like this.. i was using the home subwoofer in my car connected to a power inverter.. i think the resistors blew because the sub has an auto on/off and is usually constantly on in a home.. every time i turned off the car though i would hear a loud pop from the subwoofer. was told that was power discharging from the capacitors. ugh.. was a good $20 goodwill find. want to fix it.
@BoxImpala3132 жыл бұрын
What would cause a dead short in a amp? No lights come on just shorts out and blows fuses right away. 4 channel amp
@jhititup5 жыл бұрын
Nice diagnosed and repair.
@justinlantz6887 Жыл бұрын
You know your shit!! 👍
@esiakaharding91243 жыл бұрын
you are very good
@Live_Loud4 жыл бұрын
You're great bro! You've got real knowledge! Do you have a degree in electronics engineering? Here in India, I don't think we have anyone as talented as you so we are scared to buy imported expensive Korean amps like DD, Sundown. So do you recommend investing money in imported brands or better to go with normal brands like a pioneer, JBL which are available over here? Also, I heard red & blue circuit boards are better than green circuit boards, is it true?
@bassmanwell12555 жыл бұрын
Explain how protect mode in amps work pleeaase
@barevids5 жыл бұрын
Overcurrent protection: shunt resistor with voltage drop detection circuit across it Over/under input voltage: just a simple few transistors that come on or off when voltage goes beyond thresholds DC offset protection: combination of resistors and caps that pass a protect signal if DC is detected on speaker terminals by charging the cap too high
@Gambleraddictz4 жыл бұрын
barevids What usually causes this? Not enough power supply or a bad battery?
@f.a32024 жыл бұрын
@@Gambleraddictz even a bass remote knob can cause the amp to go into protect
@starrlucky65495 жыл бұрын
Great! Thanks for your effort.
@lenniewilliams895111 ай бұрын
i have a dd m2b amp that is in pertection and the reason being i have two of them and i got rushed while i was straping them together and wired both neg outputs to the pos and neg speaker terminals and the jumper that is supposed to go to the ground went to both pos when its supposed to be the other way around one amp is fine and the slave amp is in protect and idea what might have blown in the amp
@barevids11 ай бұрын
Output fets at least! 😁
@mrbumcraic50465 жыл бұрын
Nice Is it possible to fix lcd screens that disappear when warm (backlight still works)
@whoismarkjones92834 жыл бұрын
TCon board. Unplug 1 of 2 strips running to screen and power it on. If you get half a screen during either test. It's the Tcon
@bluboy31003 жыл бұрын
Can alot of these tests be done with a multi meter?
@Elnufo5 жыл бұрын
Some weired phasing going on between the Camera's Sensor and the Scops's screen. Blacks out the Scope partially. The do not talk to each other correctly in terms of Framerate i guess.
@jimmymodise53534 жыл бұрын
Hi,thanks so much your video came up very helpful...great job,but I have a question regarding my amplifier,when I connect the power cord it blows both the car and amp fuses and also noticed when opening there's a smoke on the side of the cap as well as on the back of the power port...how do I fix that.
@armandomorenoromero8531 Жыл бұрын
i have a 3400D BOSS amp,and when i connect the ground it starts to burn up?everything is fine,no blown fuses,but as soon as i connect ground it starts to smoke up🤷♂️any idea?
@kurchak2 жыл бұрын
Um.... Yeah.... SUBSCRIBED
@JustFun-iz9rf5 жыл бұрын
great job and thank you
@abisaiamatalo27695 жыл бұрын
Great video
@guillarte0163 жыл бұрын
New sub from Philippines
@heyitsvos4 жыл бұрын
I feel so stupid when i watch these videos :/
@MrClydieBoy4 жыл бұрын
I have a Digital Designs M2C AMPLIFIER that I bought used 2 years ago. When it arrived in the mail, the RCA inputs were damaged. I desoldered them and replaced them with the RCA inputs from the master slave link side. I eliminated the inputs for the master slave link side. When I powered the amplifier on it turned on but no signal to the subwoofer. I removed the bottom cover and looked at the components and nothing looks like it's burnt. Could this be an easy fix? Please advise.
@WosdomBites Жыл бұрын
Hey there do still repair amps? I say still because this video is so old so you never know but I have an amp that needs repair and whatever is going on with it it is acting just like this amplifier as far as it not activating or running. Be cause the amp powers or and looks like it should be functioning normal no red or warning lights but it is not outputting any sounds I have opened it up and nothing looks out of order so I'm stumped because I don't have the tools to troubleshoot at what point the signal is cutoff or if it is not being activated etc the amp is a Zedition z2400d not much info about it online but when it worked fine it really put out some booming bass pro ably the loudest and best sounding I have ever heard and I used to compete with the older early 2000s Rockford fosgate amps even took 1st.place a couple times 2 15's punch power subs and the 801s I want to say was the model number and this amp would have obliterated the Rockford for sure so I'm trying to bring the z-edition amp back to life and wanted to ask and see if you still might be repairing amps and if so if you work on send ins off of here on KZfaq like this if not I'm interested to know if you know anything about these amps as there is almost no info anywhere on it online at all and I snagged it up from goodwill that didn't know if it worked and didn't feel like testing it so I took a chance and it worked for me for a good while before my stupid ass overloaded it with less than 1 ohm and it quit working so I killed it everything the whole car cuz figured it went into protection mode and waited till the next day to turn it on and I unhooked the extra speaker that I was testing with the higher ohms and hooked up the usual set up and when I turned it on everything looked fine and like normal so I figured I dodged a bullet got all excited but when I proceeded to try to listen to it I got nothing from the amp have tested and tried everything and finally got a trade on another amp for some of my hifi gear put that amp in and walla so I'm sure it's something in the amp because the amp I got on trade was the last thing I was able to use to verify that the amp was not giving a y signal or output so please let me know and if it helps you can look me up on face book timofey samoylich will find me if you need to get a hold of me. Thanks man let me know please !
@barevids Жыл бұрын
Where are you located
@rallenallen5877 Жыл бұрын
@@barevidsI'm located in Gulfport Mississippi can ship it to you it's a crossfire XS-8K
@bbtomy282 жыл бұрын
I have a db drive a750.1 amp that makes.a.popping sound and then when the volume is increased it going into protect.can. you help
@denzellouis93843 жыл бұрын
hey bro i have an adictive audio 500.1 the fix it come on but no out put
@badasscaraudio22404 жыл бұрын
Barvids i have a phoenix gold amp and it makes noise, what seems to come from a big capacitor. It plays but when i turn it up it squeels? Any advice?
@barevids4 жыл бұрын
Normal clipping sound
@badasscaraudio22404 жыл бұрын
@@barevids hay thanks for your time.. Well the amp plays fine at low volume, i cant even turn it up on half volume it squils?¿
@jacobhaussmann9011 ай бұрын
Mind fell of the sub in the boot didnt fall far but stopped working all together
@JuanjeteMS4 жыл бұрын
I've tried hundreds of you're videos because my amp is not sounding. I think my RCA touched the ground cable during operation and 3 of the 4 channel have no power, but they sound and play signal. I'm trying to understand what could have happened but despite of the fact that I'm electrician, my electronic knowledge is not enough. I would try check the transistor because it seems to be the weakest part. I would appreciate any advice. Thanks.
@awaazhoosein65652 жыл бұрын
Hi i have a ds18 6000.1 amp it playing and goin into protect when it turn up can u help me
@edud84523 жыл бұрын
Guts look the same as hifonics brutus 1600 are they the same I had the same prob with it.
@joeanderson4443 жыл бұрын
This is why you shouldn't put the amplifier on the subwoofer enclosure, especially if you don't use the correct wood density type. It will vibrate beyond the amplifier wiring solder resonance!
@sayedmuqaddim82022 жыл бұрын
Hi bro I have a TA-V5000.1 monoblock issue is when I turn up the sound on my radio it blows the amp fuse and when I checked the 12v connector on the amp it seems to be rusted Any suggestions Thanks
@rolandopanganiban3333 жыл бұрын
Sir,. Have you been encountered a car amp 11 channel for mitsubishi pajero 2012. Car amp model is CV-0MW7B51... trouble is no sound but the power supply is good. Help me sir because i have a very very bad headache.
@carlitomadrona6211 Жыл бұрын
I have these chinese car amps with the same fault tl494 ic doesn't oscillate, what could be the cause of it?
@justforkicks1923 жыл бұрын
hey bro what can cause amplifier to go direct in protection mode when powered up? , opened it up and nothing seems to be burnt . Thanks much.
@barevids3 жыл бұрын
Output fets
@gordenoehring65303 жыл бұрын
Check outputs gordenoehring09 @ gmail.com hmu I can help u
@joeygangsta48063 жыл бұрын
Great video man but I got a question for you man so I have this amp B2 riot 7500 I’ve had so many people say they can fix it but fail your really my last hope that I have before retiring this amp it’s 5 months old and as I was driving my positive speaker lead came off the amp and grounded therefore causing the amp to short out the amp still turns on but doesn’t have no output check it out myself didn’t see anything burnt out on it so I gave up plz can u help no one has been able too progress on it plz help
@barevids3 жыл бұрын
I can repair it but I'm in the UK and shipping will be more than it's worth
@tyte90 Жыл бұрын
Would you have any idea why my amp all of a sudden has barely any output? Sub is good.. wondering if I toasted my amp…
@danielmoraes96375 жыл бұрын
thanks for share! nice
@davidmonroe44365 жыл бұрын
What would a repaired amp like that go for? When looking at amps how would someone value a repaired amp os there a price difference
@whoismarkjones92834 жыл бұрын
Don't ask don't tell. If someone knows you repaired it, any problem in the next 10 years is your fault 🤷🏻♂️
@johnalenwork534 жыл бұрын
AWESOME
@bernardpeter41783 жыл бұрын
hi sir.. really appreciate if u have opinion or suggestions with my mohawk silver 2000 monoblock.due to my car alternator faulty maybe got to this prob occur.. After realise my amp become very hot and look inside.. did notice 2 of the last mosfet is overheating...without any doubt I oder and change both of the mosfet.. but after replacing it the prob still occur.. all sound seems to work fine no protect that I know of.. so really need your help maybe any idea what wrong with it sir??
@jawnwallace61822 жыл бұрын
Can I send you a high current amp from soundstream 18000.1d to find out what when wrong and repair
@95Sn954 жыл бұрын
I screwed up litterly on my US Acoustics 4065 4 channel knowing better being impatient while playing music I accidentally shorted the channel 4 negative screw to case with screwdriver and it let out a loud crackle followed by a nonstop loud screech...I'm soooo bummed Any input what's going on?
@mycbdrx5 жыл бұрын
If I have a class d mono block amplifier with a variable low-pass filter (50-250 Hz, 12 dB/octave). Can I remove this to make the amplifier neutral or will this cause my amp to not work.
@juliorodriguez89224 жыл бұрын
Great videos, did you ever work with nitro amps? I have an bmwx-487 and i’m looking for A value resistor. Is next to the PWM IC, location RP1. Thanks.
@naiaet95494 жыл бұрын
Hey bro, I have an amp that turns on but once it hooked up then the high bass just goes on nonstop, this happens without turning my car stereo on. It's just buzz loud non stop.Can you point me to where I should look at this sort of problem please..?
@TM_Da_Destroyer2 жыл бұрын
Hello I need a amplifier fix are you able to help
@tman82095 жыл бұрын
I have a strange problem. Positive and neg touch inside the amp somewhere when you hook it up it sparks and then goes into protect. Doesn't blow a fuse. I took a multi meter and tested conductivity and one probe is hooked to the neg the other to the pos and it beeps. Took it apart but I am not a amp genius so I really couldn't see anything wrong but something definitely is.
@tman82095 жыл бұрын
Problem*
@SKINxSLAYER5 жыл бұрын
Question for ya. So if the out out of an amplifier was shorted out what would be the likely cause of the channel going out? A three way speaker had broke it's tweeter off and the wires had shorted I'm assuming cuz there is no output from that channel. It's a five channel autotek and all other four channels work fine.
@barevids5 жыл бұрын
Output transistors
@joeJoe-pb3su Жыл бұрын
Can you turn a 4ohm amp. To 2ohm?
@opiegillia71693 жыл бұрын
Good day dude...been watching some of your stuff.. trying to fix a R.F. Prime R1000.1D. Amp the protection light is cycling.. any chance you know what it 6
@Fizzer995 жыл бұрын
Hi bro, I've been watching all your repair vids the last few days. Never knew I'd find it so interesting. I have a 4ch amp here that plays for a minute or so then the sound just disappears. The lights are still on but no sound. If I remove the remote and connect it it works again for about a minute. The amp also gets hot when it's on even with no signal. Opened it up and saw 2 of the voltage regs gets hot (7815). And 2 next to them (mur16200) both have short between gate and source. What do you recommend I do?
@barevids5 жыл бұрын
MUR1620D are not fets they're rectifiers. They're meant to have a short between 1 and 3 as you're just reading the transformer winds. Voltage regs do run warm since they're dropping voltage but shouldn't exceed 60°C. If it's a class D amp I would take a scope and see if the switching waves dissaper when the sound goes. If not, trace the audio through the board and see where it loses it.
@Fizzer995 жыл бұрын
@@barevids cheers! Will have a look.
@javierlozano40664 жыл бұрын
Hi my friend I have the zx1500 mono black... and be used for like few weeks but today they small like burn and we just open and the black thing do like tick tick noise when you tour on o turn off and they dont do like on light so can you help me out
@dannyarmata88784 жыл бұрын
Probably your relay clicking on and off search causes of that issue good luck
@thedailybench25275 жыл бұрын
I got a free QSC power amplifier with a channel dead.... how would I find out what to do to repair it?
@joeanderson4443 жыл бұрын
Are those braking resistors you're using a speaker load???
@joeshaft4 жыл бұрын
have you any experience with active crossover repair? i have an old phoenix gold ax active crossover which isnt powering up even though it gets power right to the input plug. i opened it and it had a cap that had a dry joint which i reflowed but it sill wont turn on and i dont want to start recapping just yet. anything i could or should check or could be problematic?
@eagle57203 жыл бұрын
What a amplifier to constantly going to into protect mode like 2 seconds after it turn on? I unplug the speakers n rca n it doing the same thing
@barevids3 жыл бұрын
Output fets are dead
@eagle57203 жыл бұрын
@@barevids so it start playing again but I hope it doesn't shut down again
@jsmoothkidd64963 жыл бұрын
If I send my amp to you can you fix it I tried to find another one just like it but they don't sell it anymore
@marlonhusain40665 жыл бұрын
I got a dd m2 amp wanted to run it at .5 ohms we’ll it handle it tanks
@thethoughtmaster5 жыл бұрын
I am trying to figure what is wrong with my amp. No one seems to answer my questions, I have to search too long for an answer.
@delaneo1004 жыл бұрын
I've got 4 pioneer gmd 9601 amplifiers. They all go into protection as soon as they come on with no rca or speakers connected. I looked inside and didn't see any burn spots. Do you have any idea what the problem is?
@barevids4 жыл бұрын
Output fets shorted. You can buy diagnose electronics with your eyes.
@celebritystreetmuscl2 жыл бұрын
Hello... r u still repairing amps? I have a earthquake pa 2300 that needs work
@barevids2 жыл бұрын
Yes for UK based clients only.
@8806mixman2 жыл бұрын
My amp issue is... powers on and I get sound but also get a engine noise/whine. Even with rcas unplugged. I see now its outta my hands at this point. Def not a car wiring issue def somthing internal picking up the power supply
@kensmechanicalaffair Жыл бұрын
You got a bad ground at your negative battery terminal and/or the alternator is going out.
@8806mixman Жыл бұрын
@@kensmechanicalaffair everything worked prior to installation. It was somthing with the amp itself. Since I got a new new amp things have been swell
@kensmechanicalaffair Жыл бұрын
@@8806mixman Well, that was an important detail, lol. Glad things worked out.
@frankshanks9013 Жыл бұрын
What song is that you were playing
@rallenallen5877 Жыл бұрын
Do you offer repair service? Had how busy are you at the moment
@barevids Жыл бұрын
yes, to uk customers, 4 week turnaround at the mo
@csaimol70663 жыл бұрын
Can someone help me. I have an amp when I connect the power supply the red light blink once and goes off, battery voltage is about 13v, I have opened the amplifier and seen no physical defect, I have checked the MOSFETs with multimeter I didn't find any problem. No prob with ground and power supply too. What may be the cause??
@renec03273 жыл бұрын
I think is the same problem like he explained the output i got the same problem in my amp
@mystonerlife42073 жыл бұрын
How long does it take to repair an amplifier
@robbieskipper166 Жыл бұрын
Hey bro I have a tara 800x4 no sound out
@RingtoneCentral3 жыл бұрын
This is a very commom problem when someone mixes up the ground and positive wire from battery