8mm Forum: Bulb ..new or used

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Topic: Bulb ..new or used

Thomas Dafnides
Expert Film Handler

Posts: 247
From: St. Louis, Missouri USA
Registered: Dec 2009

posted March 15, 2010 11:00 PM

I bought some "NEW" old stock bulbs on Ebay ...EFP bulbs on ebay, when inspected the 2 plug in prongs are black on all three. Could this happen on new bulbs?

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frank arnstein
Jedi Master Film Handler

Posts: 534
From: Gold Coast. Australia
Registered: Jan 2005

posted March 18, 2010 09:05 AM

Yes it can form by itself Thomas,
I have found these deposits on many dichroic lamp pins on new lamps.

Its oxidisation & usually forms on the pins from contact with the air.

Scrape the deposits off with a blade till they are shiny again & then use the lamps.

dogtor frankarnstein

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At Projector Heaven the Focus is always on Detail.

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[o:/o]<|=- dogtor@projectorheaven.com.au
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Steve Klare
Film Guy

Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003

posted March 18, 2010 09:16 AM

-and to add to that, anything nasty enough to toast the pins would probably vaporise the filament too so it shouldn't be a matter of operation, as Frank says: just oxides.

I like this guy for lamps:

http://www.replacementlightbulbs.com/lampefp.html

It's hard to beat these prices and these are factory fresh too.

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All I ask is a wide screen and a projector to light her by...

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Thomas Dafnides
Expert Film Handler

Posts: 247
From: St. Louis, Missouri USA
Registered: Dec 2009

posted March 19, 2010 04:14 PM

Thank you for the info and feedback.

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