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- เผยแพร่เมื่อ 28 พ.ย. 2024
- Harman/Kardon Aura Studio 3 Teardown & Analysis PCB Board
I couldn't find any datasheet for the Bluetooth IC (WS9641) and the touch IC (ASD9050D).
[SMPS Board]
-CBD20150VFCT : LOW VF SCHOTTKY RECTIFIER
-SMK1265F : Advanced N-Ch Power MOSFET. KODENSHI AUK
[Audio AMP Board]
-AK7755EN : DSP with Mono ADC Stereo CODEC + Mic/Lineout Amp
-GD25Q40C : 3.3V Uniform Sector Dual and Quad Serial Flash
-IN-PI33TCTPRPGPB : 3537 RGB LED 6-Pin with Integrated IC
-PCM1789 : PCM1789 24-Bit, 192-kHz Sampling, Enhanced Multi-Level ΔΣ, Stereo, AudioDigital-to-AnalogConverter
-RS2252 : CMOS Two 4-Channel Analog Multiplexer/Demultiplexer
-STM32F030C8 : Value-line Arm®-based 32-bit MCU with up to 256 KB Flash, timers, ADC, communication interfaces, 2.4-3.6 V operation
-TPA3116D2 : 15-W, 30-W, 50-WFilter-Free Class-D Stereo Amplifier Family With AM Avoidance
-TPA3156D2 : 2 x 70-W, Analog Input, Stereo, Class-D Audio Amplifier With Low Idle Power Dissipation
-SY21211FCC : 5V DC-DC for RGB
LEDHigh Efficiency Fast Response，5A, 30V Input Synchronous Step Down Regulator
www.silergy.co...
Next time I will try to upgrade for better features. - วิทยาศาสตร์และเทคโนโลยี
Wow! What an amazing detailed and professional teardown & analysis video. Great job & respect.
Very interesting to look at the frequency response of a low-frequency amplifier
It's a pleasure to watch this video. Awesome!
Looking forward to the second part👍
Excelente video, muchas gracias por la información, tengo una duda la bocina solo funciona el sub Woofer, pero los medios no suenan nada, que podrá ser? Saludos
The 1-wire LED IC surprised me, must cost a lot in BOM for 48 of this.
Wow well detailed video❤👍
HOLA QUIERO COMPRARME UN AURA ESTUDIO ,Me han comentado que el NUEVO aura 4 esta mas enfocado a la CLARIDAD y el aura 3 esta enfocado mas al BAJO,es cierto?
You are the Master, Thank you!!
Awesome video!
my hk aura studio 3 does not turn on anymore. I know that the cable/wire is working, but it won’t turn on. I assume that it is the power button (that is touch/tactile). From your POV, is it hard to replace or fix?
Please check power supply module first.
When connect AC cord then must be checked +24VDC voltage out at 2x3 pin header.
And check DC5V or DC3.3V on the AMP board.
If good then you must check touch IC cables for turn on power.
Good luck.
你好！请问一下师傅，就这个音响插上220v水母音效灯亮……按键开机无任何反应！开了机，请问一下怎么修！？
正常情况下，插上220v水母音效灯不亮，按下开机按钮才会亮……现在故障是插上220v水母音效灯亮，但是按键开机无任何反应，请问怎么检查维修？是不是那个4mbitnor flash，程序坏了
very very nice ! post videos like this from other boxes please
Hello, any chance I can just unplug a faulty speaker? Ie one of them is torn down which is messing up the whole experience...
Hi... does anyone have the schematics of the power supply? Mine just got wet and some resistors exploded. Thanks in advance.
Your video is pretty much detail subed 😉
Hola amigo disculpa una pregunta, se me voló una de las bocinas de mi aura 3, si la desconecto afectará a las otras? Es que no sé cuánto cuesta repararla o si tiene reparación y por el momento me gustaría solo desconectar la que se voló,😭
Es una pena.
En primer lugar, deberás contactar con un centro de servicio postventa oficial.
Se cree que la placa de alimentación probablemente esté dañada.
Después del desmontaje, es posible que no puedas recibir el A/S, por lo que te recomendamos enviarlo primero a un centro de A/S.
Sabes dónde se puede conseguir esas bocinas necesito 2 se me malograron acá en Perú no hay repuesto
how do you a factory reset on the Aura Studio 3 ?
hey bro i have a question, we have multiple aura 3 have sound issue do you think can be from WS9641? the bluetooth connected but no sound or it can be from AK7755 and PCM1789?
Hi
Please check AUX audio sound test.
1. working : fail WS9641
2. Not working : fail AK7755 or PCM1789
Good luck
Is there any way to upgrade the firmware of the Aura 3 ? and where i can find the file?
I think can upgrade using service port.
But I don’t have detail information and firmware file yet.
Just visit service center.
Sorry
si el TPA3116 es de 50 w x 2 porque solo entrega 15 x por canal?
el capacitor de 47 mf aplica para los 3 parlantes o solo para el primero?
I guess it is enough speaker capacity in this model.
The 47uF connected just one speaker for middle range.
Hello, my speaker is working big but not small, can you help
¿Cual tiene mas potentes graves bajos profundos el aura 3 o el aura 4?
Es exactamente el mismo equipo y mismas bocinas pero este último el aura 4, tiene la posibilidad de aumentar o disminuir graves como agudos también . Saludos
Hi, thanks for your videos, really amazing. I have one studio 3, bluetooth and touch bar doesn't work anymore. Only input 3.5. Wich part of the board or pieces should i test/inspect?
Thanks!!!
Check below point.
Bluetooth: bluetooth extension U.FL RF antenna connector.
If U.FL connector separated from AMP board then can not check bluetooth signal.
Touch : check touch connection 6pin cable.
Good luck
@@iamheesoo thanks, i´ll do!! and then come back here... by the way, do you have any document or webpage to download boards information? for testing the circuits!...thanks!
Hi im looking for the size of the speakers… or the replacement piece… did you know?
Sorry, I don’t know
Excellent video I have it and I want to install an external battery. Do you think it can be done?
The Aura Studio 3 main board need 24V DC / 5A power.
If you want to support external power without modify, then connect DC to AC power bank. (110V or 220V AC out).
Just find DC to AC power bank.
But if you want to modify internal power board, then I recommend remove AC/DC board and replace new power board(DC to DC boost).
In this case you can not support AC power anymore.
Hi, i just got my aura studio 3. And i understood that i cant change the colours. I am intrested in your project. Where can i buy this pcb?
Hola, hay alguna forma de poder energizar con 24vdc de forma exterior? Con que corriente es recomendable?
Recommend 24V 5A if you need full power output.
You have to remove AC to DC power board and replace new battery pack included DC-DC boost converter.
[Battery voltage (7.2V or 14.4V) to 24 voltage]
How about use external power pack (AC 110V or 220V support)
@@iamheesoo Thank you very much, it helped me, regards.
Anyone knows where to find the replacement of the speakers? Or the part number, specs, anything? It's my fav speaker and I'm trying to fix it
Thanks
It's a very very awesome video realyyyy
I have the next doubt on my Aura 3 and if I buy the DIY kit rev 2 could help me on the next problem: when I turn on the aura whit mi finger on power on touch, the aura just light for 1 second and off automatically , and if a try again , many times, the same problem again, just turn off automatically and never can get turn on… maybe the capacitive sensor aro? I desconectted all , clean all, dessambky and ensamble all and nothing, maybe to buy your kit diy could I turn on complety the process and maybe enjoy the equipment?… thanks in advance ,, greetings.
AUra Studio is slow to respond when turning the power on/off via the touch sensor.
I think it's about 2 seconds or more.
So, the delay in response forces you to try touching it again, and doing so will result in unwanted operations.
@@iamheesoo thanks a lot, but the problem is that , never turn on, even though I touch the power 1, 2, or 10 seconds just turn on the light in the middle center, some times the full lights but never gets to turn on the system complety, I don’t know why, thanks in advance fot you support or any idea to resolve it. Greettings
@@eduardocoello6102
Please touch volume+ touch pad.
Sometimes the volume is changed to minimum after power off, So we think turn off status even turn on.
I asked about this issue to A/S call center. But they didn’t know about this issue.
@@iamheesoo i did this but doesnt work🥺😞
Anybody knows where can I buy the motherboard of this aura to replace it?
thanks a lot i coudn't find datasheet of ws9641 do you have anything about this ic?
i want program this ic chip but i coudn't find any datasheet to know about pins what do
@@abouterfan I just know made by china company. No more information on the internet. Sorry
how cluld taht small driver can produce 100rmw bass ? to small
TPA3156D2 ( 2 x 70-W, Analog Input, Stereo, Class-D Audio Amplifier )
The TPA3156D2 can be connected in PBTL mode enabling up to 100W output power. (TPA3156D2 Datasheet 7.4.1 PBTL Mode)
OUTPR--(Short)--OUTNR =====|| BASS SPEAKER /||
OUTPL--(Short)--OUTNL =====|| BASS SPEAKER \||
I can not found part number of bass speaker.
I guess maximum peek power is 100W.
Hello. Could you post a photo of the power supply board in good quality? Or tell me the resistance of resistors R520 R521 R522 R523. thank you.
From R520 and R523 resistors are 0.59 Ohm.
4 resistors are connected in parallel.
So the combined shunt resistance value is 0.1475 ohms.
When I measure the resistance with a multimeter, it comes out as 0.2 ohms.
The accuracy of my multimeter is not good.
But theoretically it would be 0.1475 ohm.
@@iamheesoo Thank for your help.
Me and my friend are trying to restore same device suffered from someone "repairs".
Much appreciated, we owe you like and subscribe at least. ;)
My Aura 3 shut down one day in the middle of playing. Do u have any ideas of what would cause that to happen?
If do not any actions(ambient light & any sound) then I guess power supply problem.
How about harman kardon onyx 5? 😂 Please
Sir
Same aura 3 i have but the 5volt ic broken pls send that ic part number
Thanks
Hi, I've come here because I can't find anything on the internet about the problem I'm having. It happens that my Harman Kardon Aura studio 3 was playing music normally, but suddenly it turned off, the speaker still turns on, but it doesn't make sound when turning on, and it basically has no audio.when trying to connect it to Bluetooth, it makes a kind of "Static noise" and does nothing else, it is worth mentioning that it DOES connect to Bluetooth, but when it starts to play whatever, the noise sounds and disconnect the device, and through the 3.5mm jack it does not work in the same way, can someone help me?
Is it working when you touch power key?
If not working then I think it is power supply problem.
Please check DC voltage after teardown.
It must be checked 24VDC always.
@@iamheesoo I already did the check and yes, it gives constant 24 volts, and the speaker turns on and connects to bluetooth on any device normally, the problem is when I play something, the device I connected before, disconnects and makes "static noise"
@@eysoyisaaa2098 please check external RF antenna cable.
If disconnected between U.FL connector and antenna cable, can not receive audio.
In my case didn’t working after assembly. So I found this RF cable disconnected.
Good luck
Hi I am having same issue. What do you mean RF cable?
This is due to the 3.5mm audio jack. In normal cases you should leave this unplugged because there is a switch in the 3.5mm which grounds the audio lines. The device switches between cable audio and bluetooth by detecting this grounding. If it is unplugged and there is still a problem I would suggest making a 3.5mm jack with a short cable where all 3 wires are tied and/or soldered together.
This speaker doesn’t have air flow or passive radiator?
Doesn’t have air flow.
So increased base power up to 100W.
cant find datasheet for ws9641. really nothing there on a chip. trying to add analog audio input to jbl go 3
Me neither. I can not found WS9641 datasheet.
I just know made by China company.
@@iamheesoo i need datasheet for get program data from i2c or uart pins and i can't find anything can you help me how i can find this pins?
@@abouterfan No more data on the internet. I just know made by china company.
I buy aura studio 3 less than a month the subwoofer is not working. I need help?
I recommend visit AS center.
I hope you get a new one.
I do it my self sir. The problem is on the power cable inside the speaker,its ok now👌
Why adc codec and dac ic is used??
ADC : aux input process
DAC : bluetooth output data & digitized aux data to Speaker analog output.
(I2S digital to analog included amplifier)
when will the new aura 3 video be released?
I will upload next video on November 26th.
Sorry. New video will be uploaded about a week later.
@@iamheesoo 👌
Nice👍
Thank you
Is the Sub really 100w RMS ? Because Jbl bar 2.1 has a 100w sub. But size is different. Your opinion? Will hit sub for a reply😁
I also have a JBL bar2.1.
More powerful spec than Aura studio3.
JBL bar 2.1
Soundbar speaker : 100W RMS
Subwoofer : 200W (225 Pi speaker) RMS
Aura Studio 3
Stereo speaker : 30W (2x15W) RMS
Subwoofer : 100W (130 Pi ??) RMS
Sir in this video pls mention the 5volt ic
Part number
SY21211FCC : 5V DC-DC for RGB LEDs
High Efficiency Fast Response，5A, 30V Input Synchronous Step Down Regulator
www.silergy.com/productsview/SY21211FCC
I have checked pin map between blockdiagram and real PCB board. Same pinmap.
Good luck
Thank you so much
That 5volt chip was bursted in my aura 3
I hought it was regulator fo micro controller
@@iamheesoo
Sir
Pin map diagram
@@manimaransounds www.silergy.com/productsview/SY21211FCC
Hallo sir, what is output in the left ldo 3.3v. I mean sot23-5 JWK3J and what the same part
It was cool
It looks like milkshake make mixer machine
do you have any firmware for this device?
No. I will add on new hardware without handling original hardware next time
@@iamheesoo could you read the firmware from spi flash and upload it?it's just that my aura's firmware is damaged((
@@РусланДжуманов-ю6в Soory I don't have an STM32 programmer. And I tried to read STM32 uart communication, but there was no response. Probably need to enter an encrypted key.
Thank you very much for your video
@@iamheesoo and when will you have a new video on this device?
Can you help me my screws won’t come out 😭
Some screws are too difficult to come out. Please try come out with Long Nose Plier and screw driver together.
Check below video
th-cam.com/video/NeGR0gija2Q/w-d-xo.html
@@iamheesoo do you know know the wholesale costs of all parts in this speaker? What do they total to be approx?
@@wazup3333 I don’t know about wholesale costs.
But I just estimate a lot of developing costs.
The material cost is lower than expected.
But the knowhow is bigger than expected.
@@iamheesoo if you wanted to buy all the parts how much do you think it would be wholesale? Like the drivers, semi conductors, etc Aside from the plastic parts
@@wazup3333 I think all parts cost around 80USD. This is a price that is difficult to match with small-scale production.
If I have all these parts, and even if I make the same speaker with those parts, I can't sell this product because I don't own it.
There is no point in making a replica product.
hi my aura studio 3 sound rattle.. when i play bass song.. too much bass not balanced bass and treble 😢.. can u help me what problem my speaker.. sorry for my bad English 🙏
I think it is normal in aura studio 3.
Bass speaker power is 100W.
And treble speakers are 30W.
Too much bass sound.
Unfortunately this Aura studio can not control bass volume manually.
But Aura studio 4 can control bass and treble volumes.
i think i blown my woofer.. because i try press my woofer I hear scratch sound.. that its normal for harman kardon?
My cuts in and out my sub
Si presionas la tecla de menos y bluethoot al mismo tiempo bajarás la intensidad del bajo y si aprietas más y bluethoot al mismo tiempo nivelas la intensidad de los agudos
que tal esta informacion sera verdadera
Waiting 😐
Pls help me
Awesome video.....Nice Explanation.