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The Imp of the Perverse

Things I think I should be doing, for better or worse.

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Month: February 2020

Yamaha DX7 – Damaged Power Cable Replacement

2020-02-232020-02-23 Laban
This Yamaha DX7 did not power up. I thought that it was due to one or more fuses being blown but they had not. After a while I discovered that the power cable was broken internally close to the chassis. This was probably due to the cable being sharply bent there many times over the…
Yamaha DX7Leave a comment

Roland Jupiter-4 (JP-4) – Battery Replacement (CR2032)

2020-02-222020-02-22 Laban
In this video I will be replacing the original NiCad battery in a Roland Jupiter-4 (JP-4). This kind of battery is prone to leaking which can cause problems. In the JP-4 this is not an very big issue (at least compared to e.g. Korg Polysix where the leaking battery will cause havoc and damage traces…
Roland Jupiter-4JP-4, Jupiter-4, RolandLeave a comment

Recent Posts

  • Yamaha DX7 – Replacing All Buttons
  • Yamaha DX7 – Audio Output Jack Repair
  • Roland SH-101 – Power Switch Replacement
  • Korg Poly-61 – Battery Leak Repair
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Recent Comments

  • Yamaha DX7 – Replacing All Buttons – The Imp of the Perverse on x0xb0x – Replacing buttons with Omron B3W-4050
  • Laban on Korg Poly-800 Mk1 – Replacing Battery & Restoring Presets
  • Laban on Building the Nava #1 – Soldering the Power Supply
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