This is maybe the 3rd or 4th time I have seem a similar problem with this circuit so I thought it would be a good idea to show it here and how to resolve it.
Nice trick i usually go and feel smell or touch too see whats hot and if its really hot i change it and usually it is my short . I been installing and repairing amps since the 90s i learned a lot but class d is a different beast and you are the best at explaining how it runs and works all together thanks for such a great channel.
Excellent work. I was going to start a channel doing this for old school amps but maybe I won’t now...you’re a lot better at explaining than I think I could be.
I'm going to try this method to fix my JBL PRX718XLF POWERED SUBWOOFER.....The amplifier works fine and the led lights shows there's signal there but no sound...it just cuts in and out if you remember your live video back a few months ago...thanks brother and keep up the good work!
Never trusted those but i end up feeling better because of you teach lol still would rather stay away just like rockville they lack in certain areas now a days it just seems to be better to buy powerful and run at half throttle🙈🙉🙊 with social media these companies and tech people should be able to see these videos and consult people like you it just makes more sense to make them more Unstoppable! #tarampsdead #alpine #kenwood #sherwood #kicker #pioneer #audiopipe #lanzar #amplifierrepair #ampdead #taramps
Awesome debugging skills. Can you please let me know how is the modulation done. What kind of device is used as modulator, a normal opamp with high GBP 15Mhz or some transconductance type opamp? Is it not the self oscillating circuit as even without the Fets being switched, you see drive signals? I'm mostly interested to know the devices close to the red preset inbetween the huge copper jumper and bulk capacitors
Hey Sam, I got two stetsom ex 10.5k's I'm tinkering with. One powers on and puts out signal except bass, soon as a bass note hits it goes protect. The other one is a little sketchy.. I'm at a loss with these Brazilians...lol
I having a problem wit my Hd3000 taramp. It burnt the 2 resistors on the speaker output terminals each on negative and positive sides. It say 10r 3watt on board writing where they were. I changed them to 10 ohm 3 watt resistors but it's playing lower I find I used to get more power. It's like when it's turn up I get the kinda power I used to have at half column wen I test it wit jus my phone and a speaker I test it wit when I just came. Can you help I need to know the type resistors as to color code and what else can be the problem besides
sir good day and thanks for the video , i have trouble for on taramps hd3000 to square wave signal generated input of mosfet driver, at the amplifier section i suspect that the comparator chip with dual output (c16 at the schematic) is damage due to emitting lot of heat , may main problem is i don't know if what is the part number. Sir do you know the part number of this chip or any replacement? thanks
Im a newbie and trying to figure out how to do amplifier repair. Im completely lost at what you were explaining. Lool Do you really need an oscilloscope to double check the parameters on the components or can I just check using a multimeter in circuit? What do you use to turn the amp on at home?
I've eagerly watched every video of yours I can get my hands on. Ive also search to try find a few books regarding class D operation and amplifier workings. Are there any books you can recommend for me to read? I need to know how the whole thing works and understand that that is a huge undertaking....lol Further regarding oscilloscopes are there any relatively inexpensive ones that you would recommend?
@@barevids thank you!!! I love your vids! I have learned a TON of info and usually need to watch them several times over to retain all the information you are giving!! Thank you again for the awesome vids!!!
Hi i'm new here and really love what you do...I've got a soundstream XBP-10 that turns on and i'm getting no sound out of it,my sub blew along with my amp I've replace my sub and got the amp repaired but no one wants to repair my Bass machine just by looking at it but i want to have a go at it myself any kind of help will be greatly appreciated
Hi I have a taramps md8000.1 that turns on normally but When you try to play music At really low volume You can barely hear the speaker It starts clipping and protection And it sounds really distorted This is on really low volume
what do you think i fried in my amp earlier whenever i forgot i hadn’t unhooked the power and stuck a screwdriver in the positive terminal on my TS 400x4 and it bumped against the outer frame for a very brief moment and i got a little bity ark and now it won’t power on i’ve checked and i have 12.6 v at the amp and the fuse inside looks good but i’m gonna check it in the morning and hopefully it blew but i don’t believe it did
I have a smart3k and something touched my output terminals well one of them for sure. And now it is making a light rumbling sound when the power comes on. It works ok but it sounds like a ground issue but I know it’s not that because I hooked up another amp to see if it was gana make the same rumbling sound and it was just fine. I think something happened to the output because at first it was making a loud popping sound in all of my 4 subs like really loud. And when I turn it up with a lot of bass it starts acting weird and pops my subs and the amp goes into protect and resets itself but it does come back on. But that light rumbling sound is still there. Could the output to the subs be messed up?
Thank for your video very very helpful.....quick question is possible I can mail u an amp so u can fix it an ill pay you ....if is possible please let me know....I like to fix things but I don't have the full equipment an experience...honestly I think I found a new teacher....thanks an I will wait for ur reply....thanks
Hey hope all is well with you i was wondering if you probably know why my hd5000 taramp amplifier passing or leaking voltages on the out circut or should i say terminals?
Do you, or anyone else know if its possible to change the type of low and high pass crossovers? I have a Taramps smart 3, brand new. I waited a while before I installed it and as soon as I tried it I noticed I had a high pitch squeal coming from one of the fans as soon as the amp starts. It'll stop after a few min but nevertheless it's there.... and hella annoying 🙄! I can't return it because I exceeded the return period because I had to wait to install due to all the COVID19 BS. Then after tuning it I noticed that this amp does not like low bass notes... it is very annoying. It would be great if it weren't for that, ohh and worst of all some voice creeps through the filters somehow and that makes me want to smash it with a sledge hammer and stomp it like I was doing a Riverdance/B-walk/C-walk! Anyone that could help? Besides the obvious 🙄 of buying a different amp. I have other amps but one is 900wrms and other is supposedly 1kw. I am pushing 2 subs that can take up to 2kw each.
If my taramps is cycling power, clip, and protect is it blown? I heard I can reset it by taking out of car and jumping power and ground? Is that correct?
What is the difference between the taramps HD 3000.1 and the MD 3000.1. I found them for the exact price so I need it for a single 12 sub what would be better. I appreciate if you can tell me.thanks
I have a ? for you Sam.(barevids) Have you ever worked on an amp that the turn on lead would have a current draw without being triggered? I couldn't find and inbox to send this ? to you personally so I but it here.. Thanks for any help..
would u be interested in working on 2 of mine old school amp? do u have a email? the earthquake 50 cheater amp 1 Channel not working and same with the zapco amp cant Bridge in the channel as the left channel is not working..
Emf has a video of why brazillian fullbridge amps dont put out as much power in the lowerhz as his half bridged amps. Shady stuff. I hope you watch it and let us know what you think.
Scope shares a ground with bench supply negative. There is slight noise as a result but any time I need to read critical low voltage waveforms I attach a local ground clip.
@@Mocredible you can use a multimeter to find dead fets and shorted drive transistors, open gate resistors etc. Amp Repair cannot be carried out without a multimeter. However without a scope you are risking the chance that you missed something and your new fets will blow the second you install them. Without a scope you also can't confirm integrity of the class D circuit once all new parts are fitted. It's possible to get an amp working again with MM only, but only if you are lucky, or already have years of experience with a scope to know what to look for without it.
They look diffrent than most because they are fullbridged technology. Most Korean an china amps are half bridge designs so it requires alot more components. Brazilian amps are usually full bridge. Few other companys also use it like kicker, jl, a couple amps from ds18 and audiopipe are using fullbridfed designs now. It's not new.
