ATI sunpower dimmed flickering at night

[KonradTO]

Hi all!
I have a problem with my ati sunpower: at night there are always one or 2 bulbs that flicker. The intensity is very dim but still I fear that this might damage the bulbs.
I found a yt video online where it suggest to rotate 180 degrees the bulbs in the plug but the trick does not seem like working in my fixture.

 

[oreo54]

Hi all!
I have a problem with my ati sunpower: at night there are always one or 2 bulbs that flicker. The intensity is very dim but still I fear that this might damage the bulbs.
I found a yt video online where it suggest to rotate 180 degrees the bulbs in the plug but the trick does not seem like working in my fixture.View attachment 2930179

So you are running dimmable ballasts?
Could be a ballast is failing.
That said a bunch of other possibilities but based on different wiring problems:

Why do fluorescent lights flash periodically after being turned off?

Answer (1 of 6): I have observed this phenomenon several times. Very often this happens when the phase and neutral connections to the lamp have been swapped so that even when switched off, the lamp is being fed the phase. When the lamp finds some ground, either because you touch it or because o...

www.quora.com

 

[A. grandis]

Hi all!
I have a problem with my ati sunpower: at night there are always one or 2 bulbs that flicker. The intensity is very dim but still I fear that this might damage the bulbs.
I found a yt video online where it suggest to rotate 180 degrees the bulbs in the plug but the trick does not seem like working in my fixture.View attachment 2930179

Did you try to put on 100% to test the bulbs?

 

[homer1475]

Ballast going bad, if the bulb is firmly seated.

 

[KonradTO]

So you are running dimmable ballasts?
Could be a ballast is failing.
That said a bunch of other possibilities but based on different wiring problems:

Why do fluorescent lights flash periodically after being turned off?

Answer (1 of 6): I have observed this phenomenon several times. Very often this happens when the phase and neutral connections to the lamp have been swapped so that even when switched off, the lamp is being fed the phase. When the lamp finds some ground, either because you touch it or because o...

www.quora.com

OMG it worked at the first shot Thank you so much! I swapped phase and neutral and it stopped. good to know!

 

[KonradTO]

Did you try to put on 100% to test the bulbs?

Tubes work well, as I said the problem was only when fixture was off. Swapping the plug seemed working for me

 

[KonradTO]

Ballast going bad, if the bulb is firmly seated.

Now with the plug with inverted phase and neutral it seems solved. That probably means that there is some leakage current in the fixture somewhere, I probably need to open it and check where it originates