On Saturday, 20 May 2017 16:54:53 UTC+1, R D S wrote:
On 20/05/17 16:44, Phil L wrote:

Is there a starter? - 35p each, I'd try this first


Thought the same, done that.

So you've got switchstart fittings. Then it's wrong starters, bad tubes or bad contacts. The capacitor can't cause this. Swapping over to LED won't gain a lot. If it's a series fitting, one fault somewhere will cause both to misbehave. 2' is likely to be series, 5' isn't. Series fittings require 110 starters. For any fitting the starter must cover the wattage of the lamp, so no use using a 80-105W starter on a 20W lamp.


NT