The Philips G8 chassis was officially unveiled at a 1970 trade show to great industry acclaim. The initial chassis was development took place between 1968 and 1970.
The first set to incorporated the G8 chassis was the G22K520. This featured the fully solid state G8 design and a 22 inch 90 degree CRT. The earliest examples of the G22K520 may have appeared in 1970 and certainly by 1971 when G6 based set production stopped.
All modules were made up of edge connectors and/or plugs and socket for ease of servicing. Service information was printed on the panels and a large number of test points provided.