Portastudio 424 Noise and Motor Whine

Discussion in 'TASCAM DIY Repairs and Mods' started by NobleStumble, Dec 6, 2019.

  1. NobleStumble

    NobleStumble New Member

    Joined:
    Dec 2019
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    Gear:
    Portastudio 424
    I recently picked up a Portastudio 424 and have discovered a problem with tape playback and recording. At random points during playback the unit itself will begin to whine very loudly from the cassette deck. it sounds almost like a squeal from a bad belt.

    Whenever this noise happens, there is also white noise on the outputs which drowns out most of the playback. Could it be as simple as a bad belt? How would that create noise on the audio signal?

    Any help would be greatly appreciated, thanks!
  2. NobleStumble

    NobleStumble New Member

    Joined:
    Dec 2019
    Messages:
    2
    Likes:
    0
    Gear:
    Portastudio 424
    Well, after a little surgery it looks like I'm just dumb and the most likely culprit is simply that both of the cassettes I used to test the unit are worn out and the tape is dry / needs new lubricant. Will test with a new cassette and if you don't hear otherwise, assume that was the problem.