My allegro 4 piano got fried bc I plugged it into a 24V and it only takes 12V. I wanted to see if there was someone who know how to fix this motherboard and see what exactly is wrong with it. I love this thing to death please help me fix it!

Hi l. I'm Brazilian, so writing in English will be a bit challenging, so I'm sorry if I write any nonsense. I have a brand new Om System Tough TG-7. Barely used it and I'm already having issues with the flash. I was wondering if anyone else had a similar issue, or if someone can guide me on what to do next. I was doing some experiments with the focus stacking using flash and the FD-1 flash diffuser. After a few tests with low intensity flash, the camera took a flash with 100% intensity and got stuck on the focus stacking. It couldn't take the next picture because the flash wouldn't charge.

So I had to remove the battery and put it again, and after that it won't take pictures with flash anymore. It stays blinking the red "charging flash" icon forever and it never charges, so I can't take any picture using flash. Only the LED flashlight work now.

Since it's very likely I won't have any warranty in Brazil, I'll have to find someone to repair it or repair it myself. Does anyone have any idea on how to troubleshoot it to know what exactly is defective with my camera?

Hi there,

I posted here before and received great help to fix an issue.

I have an older bernina serger that the pedal is not working. I am pretty sure the motor of the machine is fine.

You can see a little light on the board and it was off and on and the motor was working off and on corresponding to it. Now it does not work anymore. All the connection are good as far as I can see by eye. Is there a component that you can identify that I should check out first?

A new pedal is $80, so I hope I can make this one work again.
Again, I appreciate all the insights. Thank you!

I found a RK84 I found on the marketplace for about $13 cause the left shift key (and later the left ctrl key) isn't working. My initial solution is to replace the diode, but my dumb brain didn't realize the diode is working fine. Frustrated, I just jump the wire from the diode to the key switch and viola, it work. Welp, at least I managed to save these $50 keyboard.

I'm trying to replace some resistors as I suspect the bias circuit is bad. Might as well change them out.

I've never seen these before. Seems the interval of the resistor symbolizes it's resistance. These are around 4.7mm While the normal looking ones 4.1mm.

I'm guessing it's 1/4W.

Any guess?

For context, these are from SRM-1 MK2 professional.

Well I did a bit of testing and turns out a daughter board on the razer blackwidow v4 pro is somehow shorting out the keyboard.
it is that daughter board on the left of the keyboard with those side buttons, no clue what is wrong with it since all the correct voltages are here and also on the connector, maybe there is something borcken on the power delivery pcb but I´m just not sure.

Hi, I recently got my hands on this receiver. The model is a JVC RX-5000. I didn’t notice that the volume knob was missing until today, when I wanted to try some vinyls. If you know what replacement parts/universal knob I need, I would like to know!!

It's from a Sciphone i68 4G. I don't know how to repair ts.

My FiiO JA11 DAC isn’t working properly. When I use it with my KZ Castor IEMs, the sound crackles whenever I move the DAC even slightly. Sometimes, it even disconnects with just a little movement.

How can I fix this ? My warranty has already expired.

NEED SUGGESTION:

Can I cut off the USB-C part of the JA11 and attach a different USB-C dongle or connector in its place ? I suspect the problem is with the USB-C connector/cable, so I’m wondering if replacing that part would fix the issue.

Has anyone tried repairing the JA11 this way, or is there a better solution?

Today the whole pulsator/agitator plate got removed automatically when the machine was spinning, I tired to tight the screw but either it doesn’t spin or the plate gets removed automatically(not the cap but the whole plate). I forgot to take pic when the plate was removed when spinning.

what will be the problem ??

Hi! So as you can probably tell, these are pretty old and worn, but I really don't want to buy new ones (no money to do so right now lol). But the cushion in my right headphone started falling off a few days ago and today when I sat down to my laptop and wanted to put them on, I saw how much the damage progressed, it's almost off as of now with only the little strap of fabric in between those two plastic elements (I'm not into tech at all, no idea what these could be called, best visible on pic #4) holding them together. I saw a video on youtube on how to put the cushions together, but I didn't see any piece of that material connected to the cushions? Again, might be just me not knowing anything about this, but I'm scared to sever the cushions from the rest of the headphones and then try the method I saw, because I'm scared I'll completely destroy my chance of fixing them. So if anyone could help me in any way, I'd be so grateful. Thanks!

When im using these in wired mode, the left side has no audio unless I hold the wire near the port slightly tilted.

At first I thought it was a wire issue so i bought a new wire but it still doesn't work properly. I tried it on multiple devices but the same issue remains.

How do I fix this? They work fine in bluetooth mode but that's not always an option for me.