where do I go from here... Never seen a cable like this before. Both are chargers for a photography strobe, can't get replacement. Same company, same specs, the one with white is new..

My Bosch range hood has 3 fan speeds that have stopped working except for just the fastest/highest speed. I narrowed down the problem to the slider switch appearing to have burn marks. If I just wanted to test my soldering skills by replacing it, can someone help me find a suitable replacement?

Side view, trying to illuminate lettering

end view

top view

Hello!
I have an 8 years old APC UPS on which I have replaced battery 2 years ago.
Manual self-test works well.
Instead sometimes (I think when it does auto periodical self-test) it beeps continuously without any reason.

What can be the reason?
If there is a power loss it works, providing the power for the minutes that I need...
I just need to replace again the battery?!

Am i cooked?

Is this PN532 module fixable

Is this PN532 module fixable

So it was working fine till yesterday my lil bro unplugged it to plug in headphones, I dont like to use headphones so when I plugged back in the right side wasn't working, when I turn it on when it says line in mode the sound also comes from right bar but when I play a music or anything the right side doesn't work at all I opened it hopefully I can get some help regarding this thanks

Hi, I am a high schooler who loves computers and is also a pretty fast learner.

I recently got my hands on the iFixit Mako kit and the prying and opening toolkit from the same company. I got them because I had recently turned an old computer into a home server (which I have not used since, but hey, it works), and was super enthusiastic about reviving or repurposing some of the other older electronics I have lying around.

I figured that if I could learn to do some simple fixes on electronics, I could learn a lot more about computer hardware (which I don't have the strongest grasp on) and make a buck here and there.

What resources would you recommend for me to learn the anatomy of computers, phones or other devices, as well as circuitry?

The mod had some troubles (constantly showing overheating message). I cleaned the pcb and all was fine, working as intended. Then during the assembly the termination ring on minus cable (connecting to mod body and threaded connector) broke off so I replaced it. After replacement mod only shows message “no atomizer” when button pressed (I tried several, with various resistances, all tested on other mods). More, even when I connect two leads it still shows same message, though should display short circuit message, it can detect sc. Continuity from the connected atomizer contacts to the pcb checked and is ok. Who knows what might be the issue?

As you can see there is some water spots from where i used 99% iso alcohol to remove the adhesive. Is this still usable? I have tried to remove the stain inside and out but to no avail.

So i have seen some post on here about the gemmy lightshow controller mine just stopped powering up. And I have with no success been able to disassemble the casing to start to diagnose it. Can anyone give me any pointers?

Just curious, since I have a lot of info (books, data, datasheets, etc.) that might come in handy to other people, including seasoned repairmen.

For example, things like SMD codebooks (Turuta and others), firmware, modded firmware, software, schematics (we all know most of the ones you can find online for free are not released by the manufacturer)... stuff like that.

This is sort of a "gray area", at least in electronics (since it's a multidisciplinary area, at least nowadays), but still.

My main quiestion would be, is it OK of we share links to warezed content (mainly books and other useful info that is not just datasheets) or not?

Kitchen light has led lights failing and flickering. It's a dimmable light. Lamp mfg is unknown and I can't decipher the words, codes, numbers. Can anyone help me? I need to replace it. thank you

Hello everyone. I recently bought a used Vevor Ultrasonic cleaner that is not working. I searched and followed some of the advice from this post.

I believe the problem has to do with the power supply. The machine's plug has a power switch in the back, which lights up orange appropriately when turned on. When the switch is on, the main fan turns on, however the main LED display, which is on a circuit board with buttons to control the unit does not light up and only beeps when plugged in.

I took the machine apart, and found that the voltage to the fan is only ~ 9V, and the voltage going to the LED display/ control fluctuates between 1.6V and 2.2V. I took a video explaining and some additional photos here: https://imgur.com/a/gQusb4o

Everything on the control board is labeled as 5V, and I have verified it works properly by plugging it into a bench power supply at 5V and it lights up and the buttons work perfectly.

I'm not familiar with the main board of this unit, and I'm honestly not sure where to go from here. Any advice would be greatly appreciated.

Thanks

The oval silicon part came off the right earbud & the left is starting to come off the left one.

Do I need to replace it or can I use these without that black piece? I don’t want to limit the life on these.

Thank you!

[main board is EAX69731901](https://imgur.com/OkrBoi1)

I have tried:

* different cables

* different monitor port (2 HDMI and 1 DP)

* different computer

* changed display speed between 60 and 144

* disabled AMD Freesync

* different PSU, monitor used external PSU.

Symptom: monitor will occasionally flicker, that is go completely black for a couple frames. The flickering occurs every few minutes or so. Once in a while, it'd display garbled graphic for a frame or 2 as well. The odds of having faulty AMD 7900xt, faulty NVidia 2080, and laptop's faulty AMD iGPU having exact same fault is unlikely. And since I've tried different cables, different ports on the monitor, and different power supplies I can only conclude there's a problem with the monitor itself.

At a glance I didn't see any issue like scorch mark or failing caps; 3 years old caps shouldn't be failing already. I tried to search for the exact same board, only 1 hit on Taobao site. So any idea or suggestion as to the cause of flickering display? A replacement monitor of the same model is about $230 to $280 and eBay used ones are about $200 with shipping.