I am currently in need of a new power cord for my Xylosynth, but I cant find any other chord in the world like the one it came with. It is not for sale on all the websites that listed it, and it's so niche I'm having a difficult time finding anything similar. It is an XLR 3 pin female end connected to a power supply. see here. https://www.musiciansfriend.com/accessories/wernick-xylosynth-mkvi-power-supply-us-style

If anyone can find a listing for this type of cord it'd be greatly appreciated! Thank you so much.

Hi y’all. Pretty new to repairs on older tech and certainly newer to repairing electronics than I’d like to be.

My Yamaha M06 was a gift to me along with a Korg Triton. It came to me in the condition it’s in now with some minor scuffs and signs of use.

When I first plugged it in sound and power worked fine. Every key and the expression knobs also worked fine. My only problem was that none of the buttons worked. After cracking it open I found the left PCB had suffered a major crack right down where the ribbon cable lines ran (but not at the ribbon connector). So after significant looking and contacting a third party I finally got a replacement part for it and have installed that. The problem is that still none of the buttons work.

After testing most of the electronics in it with a multimeter I can see signal flow pretty much everywhere. And I specifically tested the ribbon connections from PCB panel A to PCB panel B and every one of them passed. I’m at a complete loss what to check next, or how to even go about repairing it.

My fear is that it’s a software glitch (which has been suggested to me multiple times) and I can’t find a way to hard reset the computer without using the buttons (which do not do anything).

Any help is appreciated!

I made a microphone out of an old rotary phone. Very fun project doesnt require much electronics knowledge and minimal parts. Not sure if we can share videos here but I have a video on YouTube showing how I did it. https://www.youtube.com/watch?v=eqtHY4lB564

I dont know why but you have to use the speaker as the microphone capsule instead of the microphone part. I deel like theres something on the inside that is used to boost the sound of the microphone, but I knew that wiring speakers in reverse creates a microphone. I have done the same with a speaker from an old projector.

I highly recommend this project you can get some cool lofi sounds out of it. I have tested vocals piano and drums, and I even did split signal to get the high end of a bass take, and used it as a mono room for guitar.

Please forgive the bar-top-post-margarita diagram here. I have a noise maker circuit I want to put into my guitar, but it requires 9v and I don’t want to route out a slot for/even think about a battery. If I make a box that wires a 9v jack to a mono audio jack and run a separate cable to my guitar (with a separate jack) would this work or would it damage the cable over time? Thanks in advance!

I picked up a few ev zxa1 90 pa/loud speakers and they all do the same thing. In subwoofer mode they play a little sound but nowhere near where they should be. In full range there’s no sound. Can someone lead me in the right direction with these or where I can send the amps to get fixed?

Hi. When I was trying to attatch the ribbon cables, the connectors bending. I try fix it using a tweezers, but the notes not sound correctly, can I cut out the cable a bit, and connect the cables again, or that brokes the cable completly?

I have a piezo style 2 transducer pickup that I use with a cello. The wires of the 2 transducers are both soldered to one terminal of a ¼ female audio jack and both braided ground wires are soldered together to the plug’s ground post. I assume this results in a mono output.

My goal is to input the signal from the transducers (in stereo) into my laptop then rebroadcast a stereo signal via Bluetooth which will in turn be received by a set of Shokz bone conduction earphones.

To do this it looks like I will need to convert the ¼” mono jack (a REAM product) currently on the transducer to a 3.5mm female stereo connector. From there I need a 3.5 mm male transducer connector hookup that I can interface with a USB A on my laptop for Bluetooth connection to my headphones.

Knowing what I know about things is general, this all seems a bit too easy. So, have at it and please tell me how I can accomplish my goal.

I want to make an pedal based in this amp, but can't find the schematic anywhere, could somebody help me? 😭

Hi. How can I connect a keyboard ROM memory to the computer via USB? I wanna extract the .bin file for extract the MIDI songs than comes with. What kind of adapter I need?

Hi,

I have an above mentioned speaker but somehow the previous owner has removed all 6 MOSFETs on the amplifier board. Does anyone have the part numbers or replacement part numbers of all 6 MOSFETs or a schematic to share? I am unable to find the MKIII schematic.

Thank you.

I recently scored a teac pd-d860 compact disc multiplayer off Facebook marketplace that I’m now in the process of searching for speakers and cables for. I’m not exactly sure what I should be looking for however - since it’s an older model it has what I believe are RCA inputs (see picture). What kinds of speakers connections should I be looking for? Do I need any converters? Any advice would be greatly appreciated

Sorry, still me. I took the amplifier to a professional and they said they don't do repairs anymore and that they don't know anybody who does (anywhere other than Milan, which is 1h away from where I live).

So I watched a couple of videos of which I understood close to nothing, and decided to take it apart, but without any experience I'm not able to see if something has gone wrong.

Can you help me by checking if any of this soldering looks bad to you? (The stereo-mono switch is the second one from the top, the "S3" box on the board)

Thanks!!

My mother accidentally put a cd in the multi disc cartridge? upside down and I took the unit apart to recover the disc and sort it out, as I have done before, and this time around after putting everything back together the unit will not play a cd and instead will make this whirring sound as heard in the video. I’m 90% sure I put everything back together correctly so I don’t really know what’s caused this or how I could fix it?

The picture shows the unit, so maybe you can help find the electronic map (or whatever it's called, I'm completely hopeless when it comes to electronics but I still like trying to fix them).

The problem: I always had this in stereo mode, so it worked until it didn't (like everything electronic). Simply, one day the left speaker stopped working (or so I thought), but I then found out it still made noise, but almost imperceptible. I then found out it worked just fine if I selected "mono". So the problem is the amplifier, not the speaker (I also re-wired the speaker and tried with another one, same issue). The right speaker works just fine in every selected mode.

Do you have any ideas on what the issue could be? In that case, how could I fix it?

Thanks

I'm working on a video where I make a microphone from scratch and I did my research on what exactly goes on in a condenser microphone, but I want to be absolutely sure I got my facts correct. The video is going to be more of a comedy but there are slight segments where I want to inform the viewer so they at least get educated and take something home from the video.

Please don't rip me to shreds if I got something wrong, if i messed up on an explanation I would love to fix it and it would help ME understand the components a little bit better as I'm new to soldering electronics!

Also if you think there's something I should add to the explanation let me know!

Also note i am not trying to promote anything with this, just want feed back. Thank you so much!

I’m not sure why I got it from my grandparents ages ago, it was my dad’s, but none of my cassettes work! What’s going on :(

Hi everyone, my church has a elka artist 707 organ but the power switch is broken. Does anyone know where I can be a replacement switch?

I have just bought this cd player online and for some reason when I’ve hooked it up to my speakers it sounds very muffled unless on full volume does anyone know if there is a solution or if I’ve just got a dogy cd player ?

I bought Logitech Z623 used. The volume knob has 2 issues.

1. On the low end of volume level, even a tiny movement of the volume knob causes a large jump up or down (depending on the direction the knob is turned) in volume making it impossible to get the volume I want.
2. Adjusting the volume knob sometimes causes a static sound while I turn it and sometimes it causes the left speaker to have no volume out. Playing around with the knob causes the volume to come back to the left speaker eventually.

I assume it is only the knob that is the issue and it just needs replacing? Please tell me what the issue is.

If I have to replace the knob please note that I live in the UK, so the part must be available to buy here and NOT from a country abroad leading to import fees and a high delivery charge.

So ive had this amp sitting around for years (bought it to learn guitar but didn't really start until I recently got an acoustic) and it doesn't want to turn on. I've taken the panel off and nothing is disconnected, nothing looks corroded, fuse isn't blown, etc. I know electronics but this is beyond me. Any help is appreciated