MC-505 , Roland drum machine , schematic please

[zen]

No experience whatsoever on this unit & hoping someone can help.


No audio from keyboard when , BD , SD , or Others selected ( see pictures )

[stj]

Re: MC-505 , Roland drum machine , schematic please

the liquid spill is obvious - check for corrosion everywhere

[zen]

Re: MC-505 , Roland drum machine , schematic please

Hi & thanks

No liquid damage

Seem like a genuine failure .

[stj]

Re: MC-505 , Roland drum machine , schematic please

nothing to see on the top, got a photo of the other side?
and that other board in the center too.

[zen]

Re: MC-505 , Roland drum machine , schematic please

Have managed to source a service manual .

Will update with some info & more picture when i have a chance to work on it again .

Thanks once again for your advice .

[zen]

Re: MC-505 , Roland drum machine , schematic please

Managed to restore missing functions with a system reset .

Power on while holding down SHIFT, then press ENTER. Note, this procedure takes
several minutes