Repairing a dirty synth from 1989! ROLAND D5

In this video, I show you how I repair and restore an unloved Roland D5 Synthesizer.

The following issues are presented and addressed in this video:
* Malfunctioning keyboard keys (one key works only when pushed very hard)
* Dead front panel buttons (worn out / dirty switches)
* Discharged battery and battery corrosion
* Case corrosion and rust
* Bad volume adjustment slider

The parts and consumables used in the video:
* 2-PIN momentary pushbutton switches 6x6x5mm, for front panel (https://www.amazon.co.uk/gp/product/B...)
* Roland D5 power button (https://www.ebay.co.uk/itm/284944263088)
* Roland Slider Potentiometer for Volume (https://www.ebay.co.uk/itm/224697981865)
* Roland D5 power supply brick (https://www.amazon.co.uk/dp/B00F5VOS9...)
* Rust Converter - Kurust (https://www.amazon.co.uk/dp/B004Z4UMU...)
* Galvanizing Zinc Spray - MZ-90 (https://www.amazon.co.uk/gp/product/B...)

Other tools used in this video:
* Cheap and good tweezer set (https://www.amazon.co.uk/gp/product/B...)
* UNI-T UT139C Digital Multimeter (https://www.amazon.co.uk/dp/B08FCD7R9...)
* Wiha Plier Set (https://www.amazon.co.uk/dp/B001J71KC...)

The unusual white plastic connectors on the motherboard are called "Wire Trap Connectors", and they are easy to both remove and reinstall. You must simply push downwards on the middle part of the connector (basically, the plastic immediately surrounding the cable) - this unclamps the cable, and it can be pulled out with almost no force! The reverse is exactly the same - push the middle part downwards, hold it there, insert the cable and release. The insertion also should take no force when the middle is pressed down correctly.

Music by
Karl Casey @WhiteBatAudio
Ben Wilson @DivKid
Corbyn Kites @corbynkites8006