For my M50, we replaced the following components: C27, C93, R19, WD3, WD4. It cost about $30 which was mostly in shipping costs. I made this a student a project for middle school. Using a multimeter, we tested components and found the unstable ones, ordered the replacement components from China, unsoldered and removed the bad components, then replaced them with the new components. I now have a nicely functioning M50 in my living room :)
He changed the protection diodes connected to the pedals' connection jacks. I didn't understand. The capacitors you mentioned are exactly the ones connected to the "mute" circuit.
@@TiagoValentexwhat is the mute circuit? I’m having a very similar problem. I get no sound out of the line outs. I get about half sound out of the headphone jack
I had the same problem. However, the real problem was C93 in the mute circuit. This deteriorated and increased leakage current, causing a constant halfway mute state. This seemed to be causing distortion, which was fixed by simply replacing C93. I find it strange that he fixed it by replacing a diode in a part of the circuit that is not an output circuit.
I have the same problem. I m not very tech but i know just a little. I got everything apart and measured the all A7 and seems to work fine. Don’t know what to search else. Please give me an advice… All the best!
Realizei a troca dos componentes A7 nas não resolveu o problema de falta de sinal saída áudio R e L Master do teclado é saída do fone continua som baixo. Poderia informar quais mais componentes vc trocou na placa de áudio do Korg-M50 73
I don’t think that’s a good ideea because they have different characteristics. I m trying to fix my m50 also that have the same problem and beside that is restarting also after a short time…I ordered some A7, A4, C132 smd capacitor from Korg parts and maybe this will fix the issue. Maybe an update also….
Tengo el mismo problema y me dijeron que es el integrado de sonido, no hay repuesto acá en Argentina me dijeron desde el servicio técnico oficial, lo quiero arreglar como puedo hacer, me pueden ayudar porque me da lástima que no funcione está nuevo.
Similar problem here... For around 1 minute after I turn on my M50 the sound is distorced, but It goes slowly improving and then sounds normal (most of times 😊). I'm in Brazil
As far as i can tell, this fix is not how you fix this problem. Just replace the C27 and C93 capacitors and it'll be fixed. Here's a quick video of my fix. ruclips.net/user/shorts8-iuL_S1IXU
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
For my M50, we replaced the following components: C27, C93, R19, WD3, WD4. It cost about $30 which was mostly in shipping costs.
I made this a student a project for middle school. Using a multimeter, we tested components and found the unstable ones, ordered the replacement components from China, unsoldered and removed the bad components, then replaced them with the new components. I now have a nicely functioning M50 in my living room :)
Hello mark i havé thé same problèm in the korg Kronos
Do you have an idea?
How can i contact you
I had the same issue.
I changed 2 capacitors: C27 (220uF) and C93 (22uF) for regular electrolic capacitors (not SMD).
Solved!
He changed the protection diodes connected to the pedals' connection jacks. I didn't understand. The capacitors you mentioned are exactly the ones connected to the "mute" circuit.
@@vanroboli Yes, my problem was in the mute circuit. It was unstable.
@@TiagoValentexwhat is the mute circuit? I’m having a very similar problem. I get no sound out of the line outs. I get about half sound out of the headphone jack
Estou com o mesmo problema também
I had the same problem. However, the real problem was C93 in the mute circuit. This deteriorated and increased leakage current, causing a constant halfway mute state. This seemed to be causing distortion, which was fixed by simply replacing C93. I find it strange that he fixed it by replacing a diode in a part of the circuit that is not an output circuit.
I have the same problem. I m not very tech but i know just a little. I got everything apart and measured the all A7 and seems to work fine. Don’t know what to search else. Please give me an advice… All the best!
Realizei a troca dos componentes A7 nas não resolveu o problema de falta de sinal saída áudio R e L Master do teclado é saída do fone continua som baixo.
Poderia informar quais mais componentes vc trocou na placa de áudio do Korg-M50 73
mark, you said A4 but the tranststor has a7 on it ,also where can i get them thanks ron
Got the same issue,where did you get the replacement?
Hi Mark. Which components have you replaced? Thanks
Hi the A4 TRANSISTORS
Thanks for the reply! ;)
@@markanthonycontreras9114 why the A4s? Those aren't transistors and aren't even in the output circuit. Those are double diodes, as I understand it.
On the board the smd is A7! Is it correct then to replace it with an A4? I have the same problem that you describe! thank you so much
I don’t think that’s a good ideea because they have different characteristics. I m trying to fix my m50 also that have the same problem and beside that is restarting also after a short time…I ordered some A7, A4, C132 smd capacitor from Korg parts and maybe this will fix the issue. Maybe an update also….
@@BmcvideoDesign I have the same problem and would like to order the same. Can you share what site you ordered from?
Tengo el mismo problema y me dijeron que es el integrado de sonido, no hay repuesto acá en Argentina me dijeron desde el servicio técnico oficial, lo quiero arreglar como puedo hacer, me pueden ayudar porque me da lástima que no funcione está nuevo.
Similar problem here... For around 1 minute after I turn on my M50 the sound is distorced, but It goes slowly improving and then sounds normal (most of times 😊). I'm in Brazil
@@diegoaraujo4852lo reparaste yo anoche repare un m50 con falla de tilde y su audio roto...soy de bs as
Where are you located?can you help me fix mine?
Hi ! I have the same Problem. I live in Germany ´Can i send you just the circuit board for repair `? I will pay with Paypal oder bank transfer ...
As far as i can tell, this fix is not how you fix this problem. Just replace the C27 and C93 capacitors and it'll be fixed. Here's a quick video of my fix. ruclips.net/user/shorts8-iuL_S1IXU
Vi seu vídeo, pena não mostrar o antes e depois