I've got this AKAI AA-25 from the local second hand shop. The main issue, distortion at any volume level except the lowest few, but at that point it's too quiet to listen to.
The unit powers on, everything functions as normal.
I looked online for any information and was only able to find a thread on a forum from 10 years ago saying that a super capacitor could be bringing down the 5V line. I took the unit apart, removed that capacitor, then cleaned the area with alcohol. I don't think doing that helped the distortion at all, although it hasn't made it worse. Now I have to push reset button on the back every time it powers on to stop the screen being corrupted (this was expected as the supercap holds the memory of your last configuration).
So I'm sat here with a dead removed supercap and an amplifier with no leads on how to repair it. There's still the replacement of every capacitor to do, which I can't do myself as I've got no materials for such a thing (solder, flux, solder wick). I've only got a cheap soldering iron where the power cord coming out of the handle plugs directly into the wall, so I wouldn't want to do the job with that iron in the first place.
I am posting this with the hope that someone who knows far more about what they're doing can shed some light on what's going on with this thing. Perhaps there is someone that visits here who is very experienced in repairing computer controlled amplifiers that could tell me what's going on.
I just don't want to replace all the caps/pay someone else to do it, only to realize that's not the issue after doing so. So, is there ANYTHING beside the caps that could be the issue?
I don't have tools for troubleshooting electrical issues such as a multimeter or oscilloscope. I will provide pictures upon request, as taking this apart again to get good pictures is a task I do not want to do unless it's being seen by someone else. Far too many screws Akai, far too many screws.
The unit powers on, everything functions as normal.
I looked online for any information and was only able to find a thread on a forum from 10 years ago saying that a super capacitor could be bringing down the 5V line. I took the unit apart, removed that capacitor, then cleaned the area with alcohol. I don't think doing that helped the distortion at all, although it hasn't made it worse. Now I have to push reset button on the back every time it powers on to stop the screen being corrupted (this was expected as the supercap holds the memory of your last configuration).
So I'm sat here with a dead removed supercap and an amplifier with no leads on how to repair it. There's still the replacement of every capacitor to do, which I can't do myself as I've got no materials for such a thing (solder, flux, solder wick). I've only got a cheap soldering iron where the power cord coming out of the handle plugs directly into the wall, so I wouldn't want to do the job with that iron in the first place.
I am posting this with the hope that someone who knows far more about what they're doing can shed some light on what's going on with this thing. Perhaps there is someone that visits here who is very experienced in repairing computer controlled amplifiers that could tell me what's going on.
I just don't want to replace all the caps/pay someone else to do it, only to realize that's not the issue after doing so. So, is there ANYTHING beside the caps that could be the issue?
I don't have tools for troubleshooting electrical issues such as a multimeter or oscilloscope. I will provide pictures upon request, as taking this apart again to get good pictures is a task I do not want to do unless it's being seen by someone else. Far too many screws Akai, far too many screws.
