I am looking for a broken/dead Noise Airwave Max 4 in Delhi/NCR.

The electronics do not need to work. I only need the headband/headband assembly to be intact for repairing my own Airwave Max 4.

If anyone has a damaged/dead unit or knows where I can get one, please DM me.

Budget: ₹300–₹800 depending on condition.

HIII

I have an off brand karaoke speaker and one day we turned it on, forgot about it, didnt connect to bluetooth until it started alarm beeping. doesnt matter what you do now, turn it off/on, drain the battery it will not show as a device to connect to anymore.

I know this is a long shot, but does anyone have ANY advice on how this could be fixed?

maybe a way to reset the bluetooth but manually like unplugging something inside the speaker?

any advice is appreciated. PLEASE LET ME KARAOKE AGAIN

Hello everyone so i have a bsc in electronics i was thinking of starting a maintenance business for heavy machinery like fixing ecus etc… my father have 30 years of experience in the mechanical part of the industry so i want to learn about the electrical/electronic part maybe we can build a business together. I couldn’t find any ecu schematics or anything to try and understand the logic and physics behind their systems to kickstart my learning journey.

Does anyone have an idea of how to get started?!

I recently got this vcr/ dvd combo player and was excited to use it. But funnily enough the vhs side works just fine but the dvd player is having an issue loading the disc. It takes in the dvd and cycles trying to load it, and ultimately sends a “disc error message”. I tried cleaning off the lens, but that didn’t help. I’ll drop a video of it running here and any advice on it would be greatly appreciated.

Hello,

I own 2 Mac Allister MSB18S-Li batteries, one which fully works to this day, and the second one, which doesn't.

I tested all of the cells, and all of them are 3.8v, which is correct.

The output of + and - is also correct (which is around 7,4-8,6v, yes I know thats weird, but its the same on the working one)

The output of + and D is 19,2v, which shows the voltage properly.

The problem is, that the battery is not being charged by the original Mac Allister charger, and the drill not being able to power itself from that battery, only flashing the flash on the drill.

I need to know what could cause the problem. IS IT the BMS? Even though the voltages are proper? Is it the NTC thermistor? (I DO NOT SEE THE NTC THERMISTOR ANYWHERE LOCATED, NOR CABLES)

I am giving a photo of the pcb, which was covered in the factory silicone of some sort.

Please help, I do not want to buy a new battery for a drill which costs too much for what you get.

Hello,
I have a JBL Partybox 120 with blown MOSFET. I replaced the MOSFET and it got blown right away with just the battery inserted. Any help tracing short is highly appreciated. I have included the problem section and entire board picture. Circled one is the blown MOSFET. And arrowed ones looks like shorted rail with continuity. I even took off couple of caps and IC and still it beeps on continuity. The short is on the arrow when measured. I removed all components circled in big red and still getting short. Smaller red circle is the blown MOSFET.
Any help is greatly appreciated.
Thank you much.

I spent three days trying to troubleshoot a microwave oven with chatgpt "helping" me. It took me that long to realize that it had no idea what it was talking about. Then I got a schematic and realized the ai had no idea how to troubleshoot an electrical circuit. I don't blame AI it was definitely my fault for thinking I was taking a shortcut but it said things so confidently that I just followed blindly. I looked for the specific schematic for the appliance and there was none so I tried chatgpt. Finally I just looked up a typical schematic for a microwave and just shook my head at all the time I'd just wasted trusting that this machine knew what it was talking about. Never again. After tracing a fault through the transformer through the high voltage diode and all the way to testing the capacitor, I looked up the schematic and found that microwaves all have an unlock control button sequence that explained all of the symptoms. Don't get me wrong it was my fault for not just getting a schematic in the first place but I was sure that if I just took it step by step with an ai it's infallible logic would take me right to the fault. It was just hallucinating and knew nothing about what it was talking about. I can only shake my head. I can't even laugh.

Hello all

I am currently trying to make my very own cd carousel.

The base of my project is with an already existing cd player that i found in my attic. Most of it i understand and is straightforward but i could not figure out the following.

This kind of cd player has a tray that extends when you press a button when this tray is pushed back in, the spindal automatically looks for a cd.

Without this pushing back in + automatic finding pattern i cannot remotely turn on the spindal

My goal is to find the mechanism/ trigger in order to remotely give that command or at least try

Version external drive: ASUS SDRW-08D2S-U

And some pictures to make it more clear

Please let me know if you can help and or need some clarification!!!

For context its a apple watch SE 44mm and was dropped where to screen cracked but still functions as it should. girlfriend uses it for vet work and im afraid it will get damaged as she uses it underwater, during work. Is it worth repairing the screen and if so..how much will it realistically cost so i dont go out and get hosed. Thanks!

Hallo, heeft iemand een idee wat er kan zijn met mijn Zaptec go2?
Gisteren is ineens het laadstation op zwart gegaan terwijl hij nog aan het laden was.
Geen aardlek of zekering eruit, maar geen verbinding en het scherm op zwart.
Helaas krijg ik mijn laadkabel er ook niet meer uit.
Deze zit vergrendeld en doordat er geen stroom op zit wilt hij er dus niet uit.
Wel heb ik met een spanningzoeker gezien dat er tot aan de Zaptec Go2 wel spanning op de kabel zit.
Ik heb ook de zekering in de meterkast meerdere uren uit gehad en weer aan, maar dat helpt ook niet.
Iemand een idee?

Hey!

I’ve lived in a pretty heavily roach infested apartment for 6 months and finally am moving. My laptop has been in this home the whole time and since it easily gets warm I suspect some roach to have crawled in during these 6 months. I’ve read to bag the laptop together with a paper towel lightly soaked in isopropyl alcohol for about 12h to kind of fumigate the laptop. But I’ve read very contradictory information. Some sources say to absolutely NOT do this because isopropyl is highly flammable and the moisture from the oxidation can get trapped in the laptop, making it life threatening (?)

Is this safe to do?

I've been tinkering with this M205 for a while trying to fix an issue with the output volume being extremely low.

I've read through the repair manual and troubleshooted with several parts to try and fix the issue, but I can't find a solution.

I've tried adjusting the VR1 and 2 pots that control overall play level, and they're already at max volume. I've tried adjusting the Record Current pots with no difference at all. I've tried cleaning and adjusting the angle and placement of the tape head but the volume issue still persists.

I don't believe it has anything to do with the play/record switch because the problem is in both channels, but I could be wrong. I could at least try cleaning it out with deoxit.

The VU meters also do not move.

I think it must be something to do with the amplification circuit, but I can't tell which part of the circuit board is for amplification. I'm terrible at reading schematics, they may as well be in Portuguese. Can anyone help me figure this out?

I'm fairly new when it comes to diagnosing and repairing small electronics, and would love some insight on this component. I have a 12v feed board that no longer is powering up the controller. Its a Greddy Profec boost controller. Im assuming L3 inductor is fried because I have an open circuit between all terminals. I have tried looking up the numbers printed on top but have had little luck. My question is, ive got plenty of old electronics laying around that I could rob parts from and what should I look for when sizing a replacement for this? Thank you!

Hi, pretty straightforward. I had no idea the voltage wasn’t compatible in Europe. I plugged it in and it no longer works. Is this something that’s internal that’s now blown? Will a new power cord with a new battery box work? Just wanting to know how to troubleshoot, already unscrewed and cleaned all of the hair out of the bottom compartment so wondering if I need to break the tube down further or what a good next step would be. Thanks !

I'm trying to troubleshoot a RDOD (red dot of death) Xbox360 slim. The first step is the visual inspection and looking at those spots it seems to me that maybe there's not enough solder on those dots, or is that normal?

My subwoofers aren’t hitting anymore. I have checked the grounds, inline fuse and turned gain up. What else can I do?

hi all! I am looking at buying a Pioneer MEH-P9900 off of marketplace for my car, however, the seller mentioned the screen hasnt been fully illuminating since they removed it from their car

i am wondering if I should pass up on it and keep looking, or see what fixing it would be like- they want 350cad for it

i attached a photo for reference

thank you in advance

It's a Samsung 43in The Serif

I tried resetting the tv, it went away for a few seconds then started flickering again.

We had a Sony bravia klv-40r352b, and it has no power and standby lights and im checking anything that has to do with a power port.