Translation Vietnamese - English

Automatic charging without turning on the power button

⟐ Commented October 05, 2025 at 18:05 MST

I was checking component suppliers and came across an IC called CS48L32-CNZR, which appears to be an audio processor / codec. I’m curious because I'm working on a phone/audio device repair project where the audio subsystem is acting strange (no output, distortion, etc.), and I suspect this chip might be part of the problem.

The device I’m repairing is a smartphone or a Bluetooth audio board (I’m not 100% sure). No audio output, or crackling / distortion when the audio should play. I can’t yet confirm that the CS48L32 is faulty, but it’s one of the components on the audio circuit.

Has anyone ever seen or replaced the CS48L32 (or a similar audio processor) on mobile devices? What were the challenges? How do you test whether an audio codec / processor is working properly? Do you use signal injection, reference signal tracing, or measure certain pins (e.g. clock, I²S lines)?

If I were to replace this chip (if confirmed bad), what are best practices?

If you have experience with diagnosing audio path faults in phones or embedded boards, I’d appreciate any pointers. Thanks in advance for any help or shared knowledge!

-Jordan

⟐ Edited October 05, 2025 at 22:59 MST

I have been working on a blue yeti mic and have came to the conclusion that the CM6400 audio IC is the issue

https://www.cmedia.com.tw/products/USB20...

I have found many on AliExpress and I’m wondering if anyone can find any from anywhere else as AliExpress is saying it’s going to deliver mid march which is a bit long to wait

Any help is greatly appreciated

Thanks:-)

⟐ Answered July 10, 2025 at 2:15 MST

⟐ Commented April 22, 2025 at 18:00 MST

I am creating an IoT project using the ESP32, breadboard, IR sensor, motor, motor driver, batteries, and connecting wires. I am good at coding, so I am sure I wrote the right one, but my microcontroller IC is unable to connect with the IP address of my device. Does anyone else face this issue? I can share the project.

⟐ Commented December 02, 2024 at 1:42 MST

But the ic is on fire, can I find the replacement part, while I don't know the serial number of the ic

Thanks

I am experiencing issues with my ATmega4809 microcontroller. The device suddenly stopped powering on, and I can't seem to identify the cause. I've checked the power supply and connections, and everything appears to be in order.

Here are the details:

• Device: ATmega4809 Microcontroller
• Problem: Not powering on

I’ve reviewed the datasheet and features for the ATmega4809, which you can find here. However, I couldn’t pinpoint any specific issue related to my problem.

Has anyone else experienced similar issues with this microcontroller, or can anyone suggest potential troubleshooting steps? Any help would be greatly appreciated!

Thanks in advance!

[image|3199093

⟐ Commented January 18, 2024 at 13:25 MST

⟐ Commented October 11, 2023 at 23:01 MST

i use the correct cable check connections but no communication

i note the communication light is blinking but no connection

could any help me with those ???

I'm facing a problem with my Ethernet adapter, which seems to be overheating. I'm not sure why this is happening, but it's causing some serious issues with my internet connection. I've tried unplugging the adapter and letting it cool down, but the problem persists.

I'm not very tech-savvy, so I'm hoping some of you can offer some advice. What could be causing my Ethernet adapter to overheat? Is there anything I can do to fix it? Do I need to replace it altogether?

Any help would be greatly appreciated. Thanks in advance!

⟐ Answer edited March 06, 2023 at 7:21 MST

Essentially he was saying was that current tradition computer chips are getting smaller and faster but soon we will hit the limit because as the chips shrink we have to pass less current through them. Here, there will be a trade off of chip performance against size.

So as these don't already exist, there must be a good reason why microprocessors can't be build that run on 3 phase AC rather than traditional single phase. Is this because as I understand it, microprocessors have oscillators inside them to generate their clock cycles, these oscillators wouldn't be changing state, but always be fixed, because of the constant flow of electrons? Without the peaks and troughs of single phase, I would assume an oscillator can not oscillate, is that correct?

My knowledge if electronics is pitiful at best, so there is likely some fundamental reason why this isn't mainstream because in my head, this would allow for potentially three times the computing power compared to a traditional microchip.

Thank you.

⟐ Commented August 21, 2018 at 16:35 MST

Yesterday I bought a MB90F882PMC-GSE1, an embedded micro controller manufactured by Fujitsu.

I'm so confused on how to use it, maybe it just a simple problem.

Your help will be appreciated. Thank you.

⟐ Answer accepted May 13, 2017 at 7:43 MST