Possibly stupid question?

[old_tv_nut]

I think "all solid state" means no tubes except the CRT; with a HV rectifier tube I'd call it solid state* (with an asterisk). Tubes in the sweeps makes it a "hybrid," of which there were many examples until all-solid-state became cheaper.

[colin4014]

Back then in the UK we would have not used "solid State" as a descriptive, probably "all Transistor" or even "fully transistorised" and in the mid sixties we had very high import taxes so very little was coming in from the far east or the USA. Electronics with Solid state on the front, such as, say an Akai tape deck just would not have been in the UK. US and Jap electronics and electrical produce never appeared in the UK, even the Sony Corp from Japan could not get a foot in the door with their colour TVs without using a non PAL decoder and not having to pay Telefunken the royalties.

Thorn very early on realised that Transistors meant more profit and as the biggest electronics company here they had stopped using the Valve in 1966, No way were they going to put any in their CTVs! As the biggest tv rental company here as well, transistors meant reliability and less service call outs. Once again more profits!