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Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

Thread

Yamaha key contact strips for toy synths

Yamaha key contact strips for toy synths

2002-02-13 by ed hallborg

I know this sounds ridiculous but does anyone know anything about a yamaha portasound pss-470?  this is a little consumer level keyboard that had the "digital synthesizer" section sliders.  I've got one I kept at my girlfriends for fun, one day feeling ambitious I opened it up to clean it all out, all I did was use tuner cleaner and removed the long white plastic contact strip to clean everything well.  Since then I can't get 3/4 of the keys to sound at all.  the rest sound ok, but in seemingly random places across the board.  

I just bought a replacement off ebay-for way too much- turns out this one does the same thing ( Damaged in shipping?). 

I replaced the contact strip once on a dx-21 and never got that to work perfectly either-the 2 C's above middle C always sound like they are  contacting on one of the keys next to it.  Am I missing something here?  Is there a trick to placing the strip correctly?  Or does anyone know if new mini contact strips can be found online? 

Thanks,

Ed



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