From hammondeer@yahoo.com Mon Sep 07 17:45:54 2015
Subject:Re: Digital Korg CX3 (no sound) using HX3 as controller

> That MIDI Loop test error is OK, for MIDI test you have to connect MIDI Out and MIDI In which you > probably haven't done.


Ah-ha


> The other tests - I don't know details about these results, it can be faulty ROM, MPU, Sub CPU or >some other problem. You can ask Korg service center, even when they can't repair it, they would
> know what it means.


I don't believe they repair these machines they just replace the motherboard when I searched for board failures on this instrument however:


One person claims he bought 2 ROMs from Sweetwater as one person wrote in a Korg forum:


"Ok ... hope this will help someone as I have been through an adventure trying to get my CX-3 going again after a failed update. First, You can get the 2 ROM chips. The part #'s in the manual are: #320012268 and #320012269. The guy at Korg's US parts distributer told me that the 2nd ROM chip #320012269 was discontinued and would not be able to get. " He found one at Sweetwater in 2012" The pads of the chips are only 1/10 inch apart according to him so they are easy to solder with the right tools. (like a hot air station, accordingly)


> If it's my machine, I would try to reload OS. There's a chance that part of code is damaged... IMHO it > can't be destroyed more by this. If IC's are faulty, refreshing the OS will fail, or again only the part of > code will be reloaded and it should work like until now, so using it as MIDI controller still would be > possible.



When I get a board as I look around I will do this before I replace it some time in the future. Is the firmware 2.01 still available if I reload? I have done this before I had a CX3 about 8 years ago and upped to 2.01.


What does not make sense to me about overwriting firmware is that it boots 2.01 now without error. Why would it intermittently work if it is firmware because software cannot correct itself if code is missing and have the correct bits once in a while but hardware can run intermittently and the chip fails and then doesn't fail.


> Of course I don't know what would happen, there's also some chance the machine will die totally.


> Decision is upon you :-)


I don't think firmware overwrite will work but like I said would try if I had a board replacement because this is a fantastic controller. I would like to get the files though.


Phil