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.
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