2 comments


  • Woody

    Got one from the eBay for $200.
    * I refurbished sliders, which turned out pretty well.
    * Floppy reader was good, but had to order the disk with system.
    * Relay is a problem, will need to be replaced.
    * S-50 refused to boot time to time or went dead in the middle of playing. Found that EPROMs lose contact with socket and pins needed to be cleaned. Then OK.

    * Several keys were either dead or didn’t play at times, so I put the thing apart and meticulously cleaned each and every contact traces and a PCB from dust and other dirt particles. And guess what, after putting the thing together again, three of the keys in the upper register went completely dead. From the schematic I deduced that these keys sit on the same wire, so started looking for lose connectors or other disconnections. And then there it was, a heritage of some wild party of the past, corroded copper traces after some kind of drink spillage or something. I must have cleaned them previously with alcohol and didn’t notice it’s a corrosion and actually made things worse. This was on a keys PCB for higher notes. Easy fix and all notes now play well.

    Still wondering if there’s any issue which will pop up.

    January 26, 2020
  • amsynths

    I have a new relay board if you need one.

    January 26, 2020

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