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 Post subject: Re: SOX lamps
PostPosted: Sat Apr 22, 2017 6:30 pm 
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That isn't really normal. Lower wattage ballasts do tend to be more lossy but it shouldn't get that hot, that quickly. I would try another 18/20W fluorescent ballast, try and get a European made one. Have a search on line, and old fluorescent fittings can always be cannibalised.


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 Post subject: Re: SOX lamps
PostPosted: Sat Nov 11, 2017 4:42 pm 
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There are some SOX lights on a road in Scunthorpe  (Lakeside Parkway to be precise) that are due to be replaced during the coming weeks with LED lighting but whilst these SOX ones are still running for now, I've noticed something weird about some but not all of them.

Some of them are exhibiting a weird colour issue where instead of the yellow colour after full warm up, there is a dull orange colour instead, or a half the lamp is the dull orange and half is the pinkish red from the warm up phase.

Someone told me this could be a possible capacitor issue, but I think it could be a sign of end of life, hence the replacement in the coming weeks.

Any thoughts on this?


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 Post subject: Re: SOX lamps
PostPosted: Mon Nov 13, 2017 6:22 pm 
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It's usually caused by lower quality lamps - Philips lamps for instance look much redder than cheaper brands. Using less neon gas is cheaper but lengthens start up time. More neon, more red. Lamps that are near end of life may have exhausted their neon (it tends to leak away through the glass electrode pinch seals), which can cause one side of the arc tube not to heat up sufficiently.


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