Mar 29, 2018 at 03:43 PM Author: suzukir122
what type of ballast is in use here?

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Mar 29, 2018 at 04:49 PM Author: Patrick
It looks like its in a cold cathode state. Is it being under powered? Is the cathode intact? If possible, try it on higher ballast factor or a ballast with cathode heating. I suppose a weak spot on the cathode could also cause it to glow, but this looks more like the purple discharge caused by cold cathode operation. Also sometimes you'll get a bluish mercury-glow around the cathode, which isn't a problem, but that has a slightly different appearance.

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Mar 29, 2018 at 05:20 PM Author: RyanF40T12
The cathode is weak and is going EoL. Looks like you are running an 800 series Philips. not surprised. They have very weak cathodes. A major downfall of the 800 series Philips.

The more you hate the LED movement, the stronger it becomes.

Mar 29, 2018 at 05:31 PM Author: LampLover
Quote from suzukir122 on Mar 29, 2018 at 02:43 PM what type of ballast is in use here? Looks like an instant start as I see only one wire to each shunted lamp holder

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Mar 29, 2018 at 07:15 PM Author: Patrick
There's not much blackening, but sometimes there's little until it begins sputtering, especially if that side has a guard. Even so increasing the power might get it working normally again, though probably not for long if it's low on emitter.

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Apr 01, 2018 at 05:10 PM Author: suzukir122
Yeah if this lamp is still operating at this point, I'd be very surprised.

Interests:
1. Motorcycles, cars, Women, and Lighting (especially fluorescent)
2. Weightlifting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Lighting has ALWAYS been a passion of mine. I consider everyone on here to be a friend

Apr 05, 2018 at 02:45 PM Author: suzukir122
Im actually surprised if you haven't seen an EOL show out of this... with the end blackening, crazy orange flashing, vacuum loss.. etc

Interests:
1. Motorcycles, cars, Women, and Lighting (especially fluorescent)
2. Weightlifting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Lighting has ALWAYS been a passion of mine. I consider everyone on here to be a friend