Faulty fluorescent light

[diy_dude]

I have a 5” fluorescent light installed in my shed, it has an electronic ballast. Last night I was out in my shed and the light suddenly went off. I flicked the switch off then on and it came back on – this then happened a further 4 times. I noticed that the longer I left it off for, the longer it stayed on again – could this be something to do with heat? The light is a sealed type which can be used outside. I checked the input supply and this was 230V after the light had gone off. I think the tube is a 1.5m T8.

What should I check to fix this fault?

 

[dannyboi2003]

How old is the tube, if the tube has failed electronic ballasts will sometimes start it then it will go off after several minutes. I may be wrong but from my experience its probably the tube.

 

[diy_dude]

The tube is no older than 2 years, I'll give it a go replacing it.

 

[diy_dude]

I swapped the tube earlier today with one in an identical fitting in the loft. The problem still occurs in the shed whereas the loft works fine. I guess the fitting is at fault then

 

[Stoday]

Low temperatures sometimes cause staring problems.

 

[ricicle]

Low temperatures sometimes cause staring problems.

Look into my eyes, not around the eyes, into my eyes

 

[diy_dude]

Without stating the obvious: It is warmer this week than it was 2/3 weeks ago. The light only failed this week - maybe it does not like the warm weather.