The CS 20A has been dismantled, fully cleaned and damage to the chassis has been straightened.
It now awaits power supply restoration and testing.
This machine was acquired from Uraguay but was found to have a "Manufactured by Olims Electronics" sticker, indicating that it made in Japan by Hayakawa and exported to Australia for sale there by Olims, who were sales and service agents for a range of late 1960s Japanese electronic products.
On arrival the machine was dirty but appeared to be complete and in generally good condition.
Restoration 1 Cleaning, Physical & Safety
The machine was dismantled for full examination and cleaning.
The diecast chassis was found to be damaged and bent at the left rear corner, most likely by the machine being dropped. No damage was evident to the electronics, a testament to the solid internal construction that was typical in first-generation machines. The bent area was reformed without further damage.
All electronic and mechanical parts were cleaned, documented and then rebuilt. The machine did indeed appear to be complete other than a few missing mounting screws.
Restoration 2 Power Supply
The mains side of the power supply was found to be unsatisfactory from a modern safety perspective. Additional insulation, earthing and replacement of bypass capacitors will be required.
The power transformer shows some signs of stress and awaits testing.