dwf2008

I have recently acquired a wk-1630 which is in like new condition but which has sat unused for a very long time. Some of the keys will randomly fail to turn off when the key is released. The keys return ok but the note off switch fails to register. I thought I might open it up and try to clean or lubricate the switches but first was wondering how difficult of a job this would be. I don’t want to get in over my head so any advice would be appreciated. Thanks

Is there a list available of the tones or voices available in the wk-1630? They are printed on the keyboard but I would like a list I can print and put in my notebook. Also an index to the rhythm patterns would be helpful. Thanks