Yamaha Portatone PSR-540 - Repair Issue

Discussion in 'Instruments' started by m0lk, Oct 6, 2017.

  1. m0lk

    m0lk Newbie

    Oct 6, 2017
    Likes Received:
    Hey there,
    This is my first time attempting to really clean or repair anything electronic, so perhaps I made some hasty first timer mistakes. Someone gave me a Yamaha Portatone PSR-540 that they bought in 2008 recently. I played around on it and found a significant number of dead keys, perhaps 20%, and decided to dive in and fix it. After watching a few videos on youtube of other keyboards, I began digging in and through a long painful process of lack of proper tools/discovering how to take this specific keyboard apart.. I did.

    Here's what I did:
    -Cleaned both contact strips with contact cleaner and a tack nonstick painting towel (the towel might have been an issue) and cotton swabs. I didn't use gloves for most of this (oops?).
    -Removed all the keys and cleaned them with water, paper towel, cotton swab.
    -Shook off the rubber contact strips
    -Air dusted everything
    -Wiped down all plastic insides with a paper towel for dust removal etc

    I put it back together, and unfortunately now 85-90% of the keys are dead.

    What could have gone wrong/how might I be able to salvage this?

    I'm really at a loss right now.
  3. dragonhill

    dragonhill Guest

    get a used USB controller with MIDI.
Similar Threads - Yamaha Portatone Repair Forum Date
Yamaha AN200 vs. VSTs for Trance? Software Sep 21, 2020
Yamaha AN200 vs. Yamaha AN1X Soundgear Apr 28, 2020
Ever wondered how the Yamaha CS 80 works? Working with Sound Feb 22, 2020
Best pair of studio monitors for under $1000? Yamaha HS8s or Focal Alpha 65s? Studio Feb 12, 2020
Yamaha THR series. Recording via midi? Soundgear Jan 8, 2020