On Thursday, 7 June 2018 09:10:25 UTC+1, Brian Gaff wrote:
Well I still have three Thorne fittings with the thicker tubes and although
these days they are little used for obvious reasons, in the past my main
gripe was hum from them when they were on. i guess this would go away if I
replaced the tubes with LED ones that fitted the 4ft sockets and took away
the starter.
Brian

no, you left the humming ballasts in circuit.


NT