G9 LED strange behaviour

[BobbyCliffs]

I have a ceiling light that uses G9 LED lamps. The lamps does not light when switched on. However, when I put my meter across the power supply to test if voltage is present the LED lights immediately. Once alight and the meter removed it stays alight until switched off. Switch it on again and nothing until I put the meter across the supply again. Mechanical switch. 240v

 

[James]

Try changing one lamp to a halogen

 

[BobbyCliffs]

Try changing one lamp to a halogen

Hi James yes that was the answer, the halogen lamp worked perfectly. Have you any idea why this would be ?