"...I want to also note that I was powering it through a newly purchased
step up transformer..."

Japan's household power is 100v A.C. if I'm not mistaken. Your step up transformer is listed as what 100v to 120v A.C. If it says anything else, like 120v to 240V then it will certainly damage your MP4.

Also, it sounds very much like your SSM2044 has died. In case this would also happen to me, I've purchased a replacement recently on an Ebay store in China for about $10 (including shipping!). It arrived quickly and in perfect condition and is now in my MP4 working fine, the date stamp is 1987. I have kept the original (date stamp 1982) as a back-up now.

These chips are 28 years old after all, and they were manufactured in an era where reliability rates were quite low. I'm surprised that they've lasted that long ! I only hope none of the SSM2033 in my MP4 dies, because these chips are impossible to find, unless taken from another non-working MP4.

Good luck.
Alain.

--- In korg_mono-poly@yahoogroups.com , "likeandrot" <likeandrot@...> wrote:
>
> I just recently moved to Japan from the Seattle area and brought a couple treasured items along to create with, the Mono/Poly being one of them. So today, I was recording with the MonoPoly playing in poly mode while adjusting the filter and the sound very quickly faded out. No nothing from any of the oscillators the filter or the noise gen. I can however hear a very quiet sound of maybe the ADSR when I play the keys. Just so all possible information is present I want to also note that I was powering it through a newly purchased step up transformer (not sure if that could have had any effect on my precious)
>
>
> I also have a couple keys that don't work -it's not just dirty contacts either. It looks like the contacts for those keys are corroded somehow. Is it possible to find or repair the contact board
>
> Please, any help would be greatly appreciated!
>
> thank you,
> chad
>