Airam 40W Rapid-Start tube in EOL & various starters

[@leejenwin1937]

This tube has a gas contamination - hence non-ionisation of the cathodes on preheat and a characteristic very dull red glow. Classic EOL occurs when either or both cathodes have exhausted their emissive coating onto the tube wall, which is a very obvious sight whether the tube is switched on or off. In classic EOL the bare tungsten filament fails to ionise and takes on extra power causing a bright orange glow. There would still be rectification across the tube in this case too, not zero striking. You can attempt to "revive" the lamp on HF this sometimes works.

[@symboly1042]

Seems to be more common in T12 tubes with my limited sample size of three with one having this issue vs around 40 T8 tubes with one also having same kind of fault

[@mr.lumix93]

It also happens with us as with T12 and T8

[@mr.lumix93]

I also have a light bulb with the same problem, but the spirals of the lamps are glowing. If the author of the video is interested. What kind of fluorescent lamps exist in our country and not only

[@lnf4530-b7s]

What yellow starter

[@sylvainmichel8659]

Le starter est en court circuit,les.bilames restent collé.il faut changer le starter.

[@symboly1042]

I think it might have lost its vacuum.

[@fansloverz]

lost vacumm doesnt last long to shine

[@symboly1042]

I had a 58W Osram tube loose vacumm, and it behaved just like in this video no shine, only glow from the filaments, same clicking pattern with the starter as well.

[@fansloverz]

​@@symboly1042maybe the ballast watt is the exact same as your tube???

[@symboly1042]

@@fansloverz yes it was and i think it lasted about 1-2 minutes flickering if i remember correctly

[@fansloverz]

@@symboly1042 wow thats indeed very long, mostly i saw Flourescent tubes lost vacuum just glows for like seconds and not minutes

[@aryanmhcen6005]

😂😂😂😂😂😂😂😂

[@djm5k]

Preheat is so obsolete in this day and age

[@q3dev]

it's cool but i would rather sit in a room with electronic ballasts

[@filippocara05]

Not always, if you need to turn on ad off the light frequently i would choose a preheat ballast because it is less harmful to the electrodes and the tube will last longer

[@q3dev]

@@filippocara05 still electronic ballasts with filament preheating will provide longer lifetime

[@djm5k]

@@filippocara05 that’s why you use a programmed start ballast for F32T8 lamps which were the replacement for F40T12’s

[@filippocara05]

@@djm5k i love programmed start, in fact all my fixtures have it.I didn't get why you mentioned that 2 specific types of tube, preheat and programmed start are the easyer on the electrodes on every diameter and lenght of tubes, not only in the ones that you mentioned.

[@averageslytherinperson6154]

Tube is so EOL that it doesnt even start on overdrive